smart fortwo hv battery

Khairil - No. D John Please anyone who can help you love. I’m not certain what the problem is then…it sounds like everything is balanced. To be perfectly honest and I mean this with all due respect, this is a primary school question. But this does not help the end-of-life battery B. bob.kennard@barkpm.com, can you charge a 4 lead acid batterys in Serial with a wind turbind and Parallel with a solar system I would rather replace a $40 battery than pay a $200 service fee. 1. I have 14 batteries 1.2V 4000mAh NiMh connected in series to get 16.8V pack. Also…it’s not my site…I just help where I can. 2. stays over 90% of time in float (from 2013). Need to update your pics / article to make it clear. These welders give the amps but make sure it is regulated to 28.8V max, for a 24V string, PS a 54 piece battery bank is not all that common. Can I replace them with a 2400mah or greater for longer life? ~ 4000mAh/4 hours charging = 1 Amp. @ Yathisha Please zoom out and/or disable DPI scaling in your display settings to view smart.com. Cheers, I have a science team parallel wiring 2 sets of 10lights christmas lights which ran off 2 C batteries each and 4 small lights which run off 2 AA each all to one switch and one battery. That design is basically what I want to create; but with all that I am reading, I am worried parallel charging higher amperage batteries (looking at 2.5 Amps for each setup) could be dangerous and / or damage some of the packs. Tapping is also common on Li-ion and nickel-based batteries and the results are similar to lead acid: reduced cycle life. He does not recommend that they be connected alternately in parallel for 42 volts 240 amps. Any one can help me to configure a battery bank for solar power system. The battery packs which I am getting from work are designated as 14.8v dc, 6.15 amps, and 91.02Wh. Have just ordered 8 pieces and including handling costs they are under $US200 ea, Clarification AGM = Absorbent Glass Mat, which use Sulfuric Acid Thixotropic Gel as electrolyte. BTW Solar is more EFFICIENT on a cooler day often with scattered cloud, although the unit wont create as much power it does not have to as fridges in particular are not working so hard. Jay - I wasn’t suggesting you were wrong, I was just trying to figure out the possibilities. I just want to know if what happens if one cell(Battery) in placement is reversed in series and parallel? I have just started reading into this and very rusty, alas. If I can’t balance a pair, I use unbalanced batteries from another pair to Comments are intended for "commenting," an open discussion amongst site visitors. What you might find is that the new cell will have a higher voltage than the others with the battery near full state of charge. Such a battery needs more than 100 Li-ion cells connected in series. Batteries (and cells too) are not exactly identical, so it may With Li-ion, the parallel strings are always made first; the completed parallel units are then placed in series. how do i create 52V 26AH battery and use what type of battery model for E-Scooter? It is important to equalize the batteries periodically and check the SGs. (Example: 10 Amps total per rack… use a 1amp charger to charge the group in 10 hours – ignoring inefficiencies for now.) This not possible/advisable because individual battery is 5Ah. This partly answers myprevious post when I asked what is the maximum voltage batteries can give in series. Help the me build a magic peop. In Figure 5:  Serial/Parallel connection of four cells. Undercharging is a very common problem. the batteries need to feed   11 kV AC bus and load is 200 MW. I have in my solar system 2 AGM battteries connected in serial, 130Ah each, and I have been using them for 2 years. Target battery pack size is 20Ah / 48V DC. So my question is what could be the reason behind unequal discharge. As I said at the beginning of my post, the two branches currents will be close, should not differ by more than 10%, let’s say 24A and 26A it sound OK for 50A charging. Not a good idea to have 250Ah and 300Ah in the same string as charging will not work properly, keep same Ah rating Will continue to monitor my system. Jon, your best bet to reduce wear would be to hook up more batteries in parallel. Firstly the last config isn’t a good idea. Surely you are just messing around? The low cost solution, at your own risk: measure the real capacity at discharging of battery A and buy just one AGM battery of this capacity….and monitor both frequently and attentively at charge / discharge. A new cell has a higher capacity than the others, causing an imbalance. I consider in this case only batteries of same capacity, voltage and mark, in state of order. So, I think a 7S2P battery containing 2 x 7 cells, http://www.amazon.com/AMAZING-95-LED-Aluminum-Flashlight/dp/B000Z7GCRS/, or this lantern: There is a good chance your truck already has a transformer that reduces the voltage to accessories such as the cigarette lighter and the 12 volt winch could be plugged into the cigarette lighter. A consumer charger may not apply the correct trickle charge when fully charged and the cell can overheat. if two batteries are connected in parallel and they have different voltage ,so which one voltage will be shown on AVO meter, and merits and demerits. As for the one battery at a time or both at the same time, my answer to Aamir may help… If the two batteries are fully charged and at the exact same voltage, then there’s no difference. The lead and NiCd batteries have this feature. Does a battery charge current limit become additive in parallel? I go there almost daily, stay 6..10 hours to work on our two acres We should all learn and experiment, but we should also understand and respect what we don’t know. Of course, you need a 1500W or 2000W (better) true sine wave inverter at 24V If one cell fails, only the affected module is replaced. The battery I will use four or at least more than one if there are no problems is When using power from a battery, it supplies some amount of power (watts.) New generation smarts registered from 1 January 2015 are covered by a 36 month warranty – without a mileage limit. For example,  1000W 2. BU-415: How to Charge and When to Charge? __ __ __ __, 2) Connect 75 of these modules 5s15p to get 35.52Kwh and 277.5V Their customers know from experience that a single new cell among partially worn cells constitutes no problem. Some cells have built-in PCT and CID; these protection devices can also be added retroactively. This is especially critical in a series configuration because a battery is only as strong as the weakest link in the chain. Despite all this, with the batteries fully charged, the first cell in seres is showing an SG of 1.150 whilst the rest are at 1.250-1.270 at 23ºC. = 20Wh Abdul - Regardless of the what you measured, you should never have 2 batteries of differing voltages in series or parallel. Figure 4: Parallel connection of four cells (4p). Les 8, 9 et 10 mars prochains auront lieu les Rencontres du Tourisme de Bretagne. There are no cells that can deliver 80,000 amps. We are required to do this in any calendar year we place new automotive batteries on the market. when I hook the bulb up directly to two, non-rechargeable, 123a lithium batteries, the light shines brightly for a minute or two, and then the batteries discharge to a really weak state. How do I go about connecting these batteries? Love the site. NabuN - Batteries/ battery cells on equalizing charge never develop the same voltage during or immediately upon completion. They are a work of art, but really needed for safety and hold batteries secure against all odds. WITH INDIVIDUAL CHARGE CONTROLLERS , HOW TO HOOK UP THEM IN SERIES . Integrate as many Li-ion cell/battery required for developing a Li-ion battery module which can produce 120 V and 150 Ah. Is it possible the solder I used is adding significant resistance? https://www.made-in-china.com in a battery bank series is subject to much greater demand/stress and so ages more quickly. (use a volt meter to make sure which is the plus and minus output of the lighter if this is necessary for your 12 volt winch) As I’m also using a non-OEM replacement power pack the laptop doesn’t “understand” the power pack and won’t charge the battery. Checking Internal Resistance and using said batteries together for the life of the batteries you will be fine in this particular situation. Just check the hold voltage of the older batteries and compare with new. how does the contact points of RC Forums. Any heads-up ideas would be much appreciated. If you have any further enquiries please don't hesitate to email cs.uk@cac.mercedes-benz.com. Where do i turn? 5) There is a tight charging range to extend battery life. Build your smart Book a test drive Request a call back Download an ebrochure smart connected Portal. Shola - Batteries that are connected in series automatically always carry the same current, (at each positive terminal), regardless of whether they are being charged or discharged. Dear Sir., High voltage batteries keep the conductor size small. I wonder you can help me in the below query. Would something like this work? |-{1800]+-{1800]+-{1800]+| Is that even possible? (12V 11Ah DC) + Resistor >> (OUTPUT 12V 1AhDC). Id say connect them up as intended but it might be worth taking them off one at a time say once a year and charge them on a separate mains powered charger with a battery quality/health indicator so you know which battery is going strong and which is failing. Li-ion is 3.6V; Li-phosphate is 3.2V and Li-titanate is 2.4V. thanks Virian. It currently runs on a 300 mah, 3v lithium primary coin cell which gives a lifespan of two years. Michael - I’m intrigued by your request but I have no idea which country that mobile number is for. I will parallel them to increase the range. Four 18650 Energy Cells of 3,400mAh each can be connected in series and parallel as shown to get 7.2V nominal and a total of 48.96Wh. Connecting 8 12V batteries for 24V charge and dual 24V and 96V outputs. How do I calculate this without testing 100 configurations and wiring possibilities? Mayby a simple Question, but I did not found the answer so far… Thanks for the replies! (Cables need to have the same length to get the same resistance, so all are charged/discharged at the same time). so the total voltage stays at 4.8V but the current rating will go up to 5000 mah. please help me with the wiring. A HUGE difference in cranking speed between 13.2V and12V. Some of them will fail prematurely, regardless how the entire group is charged and/or discharged. Is there any problem if batteries connected in parallel have same voltage but different current. Thanks a lot Dan. Ujang Sumarwan, Lecturer Bogor Agricultural University Bogor Indonesia, is it correct connecting 12V, 80AH with 12V 120AH series to get 24V for 250kVA DG starting. May these 15 battery have any damage while they are working The weakest battery may enter in deep discharge and the lifetime will be reduced. I even tried to make 10V battery removing / shorting the defective cell and I learned it not worth to do this. No matter how long I charge it the open voltage cell is becomes 10.8 volt after a while without any load. worst case. 40..50A at 56..60V. need your guidance for sourcing of simultaneous charging and discharging controlling device for battery in electric vehicle. What you say is right in that the batteries should equalise out but to have that heating effect you saw, something must have been wrong. I have 48v 30a 16s cell Bms Circuit so Kindly suggest me which capacity battery i use for this also suggest me its diagram. I’ll keep it simple though.. you might want to consider using 26650 cells instead.. it be smaller than 28 coin cells and way less complicated. I have an backup equipment that requires 24V to start. Since this is DC current what gauge wire is appropriate between each of the battery posts? Hey, just wanted to say thanks! I assume that means that the 11.1V would try to charge the 3.7V and the 3.7V would get very hot. What do I have to put in-line to control the amps? is this right,what is the side effect to the second working group,... For Ray : @Haresh I need to run 4 twelve volt batteries in parallel. Now I need to increase the capacity by adding in parallel anew serial block of 2 batteries. Sadly, Dr Jack, some of us have no backgrounds even remotely related to electronics and electrical setuos. I have a scenario that I am wondering about. I want to ask if i can conect 2 of them in parallel and the third in series with the other 2? I’ve tried several configurations, no luck. Alle Jobs und Stellenangebote in Bamberg, Bayreuth, Coburg und der Umgebung. The plates are different, the grids are different, the separators are different. Thank you. If you are not using your car regularly, we recommend starting the engine and letting it run for a period of at least 15 minutes every two weeks. Given that your 240W panel gives 7.8AMp that makes it a 30V panel, which is ideally matched to your (Calculated 240/7.8 =30 V) so just check that your 80W panel is the same voltage. I have a 3K watt voltage inverter. If I have a 60ah vehicle battery that has 500 cranking amps and put it in parallel with another one, will the cranking amps increase to 1000? Myself I am a series man Volts over Ah any time. 3 batteries, each of their specs= 3.7v, 3000mah, 1C. Founder Lets say I have access to all typical household batteries and my desire is to create a series/parallel configuration that will as closely as possible supply 15V and 7A DC. i want to make a combination of battery for my Quadcopter (maximum 110amp current required for four motors) from these batteries i.e 2cell of 4200mah in series with 2 cell(parallel,becomes 4400mah;25C) of 2200mah battery. Though its too technical, I could still make some sense out of it. Sorry for my confusion. Others suggest it’s best to construct 5p1s and then connect 10 of those to end up with 10s5p. I stored SLI batteries/auto one on top of another, but only for short-term (1…3 weeks),I even put three Short of switching individual batteries in and out of a system to accomplish this, is there a way to use a marine or automotive battery charger to directly charge the system? Thanks Also included are a single 18650 battery holder, a USB lead, and a phone charger lead. probably defects. 1- Both are of same voltage and amps capacity. And these are chemical reaction batteries - they are destroyed slowly during use. Cell matching is a challenge when replacing a faulty cell in an aging pack. So if one could stack kegs on top of one another (in series), then their speeds add. Just look at how they series 2 x 12V to give 24V in a truck. Dans votre magasin GiFi, vous trouvez des milliers d’articles à prix bas pour la décoration et l’aménagement de votre maison : objets déco tendance, ustensiles de cuisine, linge de maison, etc. A2) As I said upper ... : 2000 mAh. In your case, for 2 solar panels with 36 solar cells maximum charge current will be ~2x150W/18V = 4x 1.2v in series is 4.8v Technically you might be able to charge 28 coin cells faster than a larger single cell, but at a cost of complexity and balancing issues (don’t expect it to last long as a power pack). Yes, I know we say battery when buying CELLS at Walmart but here in a more technical setting we should use words more preciselyl. Yeah, I thought that last one might be out of balance. Thanks. I would like to use a parallel 4 battery holder that connects by soldering directly to the main board in place of the single battery and that the batteries can be removed from individually and easily without having to deal with soldering. I want the pack to be based on a 12V battery, have a 5V USB charger built in, a power inverter built in and direct connection to the 12V available… I plan to build these into “road-case” style cases. For smart Roadside Assistance, call 00800 2 777 7777. i want to build 7.2volt battery with 2400 mAh. Battery life will be reduced. Insert the USB stick containing the update file in your smart's USB port. If I take each battery to a common buss, will that cure the problems described with multiple batteries in parallel, @ Ceasar My plan was to leave everything connected and just connect the pump on only one battery + and - as and when needed. not taking into account of situations where all the other existing batteries are in good condition, good SGs and with plenty of life left in them? Will my overall specs now be 5000mAh with 40A continuous drain? Li-ion is a voltage based system that lends itself well for parallel formation. The testing will be with the li-ion placed at various points of the 6v wet-cell batteries (because that’s what I have to work with) to see if the delivery and sustainability of the batteries are accomplished, and if there’s a happy-medium to charge the hybrid battery. Building series strings first and then placing them in in parallel may be more common with NiCd packs to satisfy the chemical shuttle mechanism that balances charge at the top of charge. It is important to use the same battery type with equal voltage and capacity (Ah) and never to mix different makes and sizes. All 2v cells were at acceptable SG level and about the same SG except one at the end of the series which had a much lower SG than the rest. (I remember being very alarmed, thinking that I could have blown up our bus or something) and ripped the battery pack apart immediately. Thanks. the batteries would only have an intermittent discharge before overheating.~5/10% on cycle 90/95off cycle. It runs on an electric motor, fueled by a 96v 120ah LiFE PO4… The maximum operation, per charge, on the battery in the bike is only 30 minutes. Remember to also buy a charger for it. Ha ha - actually I just happened to find this site yesterday and thought I’d pose the question.). my question is how many cells and in what configuration 3s means a nominal 10 volts so i am thinking going 4s is a better option The problems are with the batteries, not the configuration,  if you really understand what he asked from us. Such overload condition could lead to a thermal runaway before the remaining safety devices activate. Question: could I use C or D cells for the external pack? We would like to show you a description here but the site won’t allow us. Yes ! Positive Temperature Coefficient Switches (PTC) and Charge Interrupt Devices (CID) protect the battery from overcurrent and excessive pressure. Will that give me 11Ah at ~12v? “On charge, the low cells fill up before the strong ones” is not true if the low cells have high internal resistance. how to connect batteries to get 24 volts DC and a amperage of 3amps. BU-302: Configuraciones de Baterías en Serie y Paralelo (Español) Lead-acid cells will not have any significant charge below about 2 volts. Thanks in advance. for reasons of mechanical resistance (to not crack the plastic case, in time), with spacers I want to give more current to a dc motor, but without burning the motor driver board. The shop replaced my 2 - 12 volt batteries with 2 - 6 volt batteries. For example if the pack will be 10s5p they build the series and then parallel 5. TEST: Q Acoustics Q Active 200. Jim - It is a bad idea to parallel deep cycling batteries. The voltage must remain the same (12V) but I would like to increase the overall Amps, I am thinking Parrallel configurstion is this correct? Woody,  What do you mean 2s2p using 3 equal cells? But finally we will keep the positivist connected to the first battery Is there a test I could do to really determine the Ah capacity of a cell rather than rely on the documentation on the pack? Need a little help. A block of 20 x Li-Ion cells of 4.8 Ah in 4s5p configuration has 14.8V @ 24Ah.and 355Wh = 0,355kWh. How are these flat cells physically connected together? TO POS. If you plan to remove the batteries and charge them separately as 6 Volt batteries, you would be OK. One other thought for simplicity sake… You could go with a 12Volt Battery and a 12Volt charging system and then use a 12Volt to 6Volt voltage converter to run the rest of your boat’s systems. is it possible to charge a NiMH and NiCD that is conneted in series ?? Configuration is the standard, 4* parallel and 4* series to get 48 Volts array. If you run two batteries in parallel in a motorhome, where does the earth lead go? AND NEG TO NEG.WILL THIS GAIN ME MORE BATTERY USAGE AND CAN IT HURT ANYTHING MIKE. ONLY CONNECT THE FIRST AND LAST OF EACH SET TO THE PARALLEL CONFIG…DO NOT CONNECT INTERMEDIATE BATTERIES IN PARALLEL! I have 2 batteries in series and each of them are 7.2 Ah. Had my RV trailer worked on 6 months ago. https://play.google.com/store/apps/details?id=pl.freshdata.batterypackagecalculator. Sorry I just miss type it! But if one’s a little lower than the other then some energy will be wasted while the batteries equalize. you could not charge both batteries at the same time. Look on the web for an inverter 120VDC to 110/220V 5KVa or better and hook <20 x 300w @36V to give 5kw charge @150VDC to your inverter. Read the manufacturer’s recommendations, I learned a lot from these datasheets. I mean number of battery and each battery AH ? 82 mm. Does it double it? Keep batteries away from small children. Cells are a mid-green colour. Running cells together in this manner would not be for the begginer however. For safer charge, you must monitoring the battery/cell with the highest voltage, (the voltage to not overcome the upper limit recommended). I am looking to run a serial/parallel configuration all 12volt must the amperage mach exactly or can the amperage vary from battery to battery? The illustrations/diagrams were also very helpful to visualize the parallel vs series circuits and helps to visualize and realize the benefits of a hybrid system. I would like to cut out the AAs altogether and use one of my many adapters connected to the + and - terminals on the charger/remote with out damaging the charger/remote and/or the 3.7v 70mAh in the helicopter itself . Now to my question, because I have to carefully program the charger: Although the battery pack is rated at 7800mAh with 9 cells (S3P3 @ 11.1V), opening the pack I see 9 cells (18650) in S3P3 configutation, but each cell has 1800mAh printed on it, which looks like this: |-{1800]+-{1800]+-{1800]+| Keep the VOLTS the same for each battery.. @NabuN, thanks for the clarification. To get to 12 V you need 10 in series giving 12 V @ 4.5A The 2nd config is 4 parallel connections, at each battery end, also 2 rows of 4 batteries, each row connected in series, and of course the 3rd image is 3 parallel connections with 3 batteries connected across their + and - terminals., and a single row of serial connected batteries to make 4.8V . Q1) Second, maybe your battery is defective, I understand it’s removable. - L'Etudiant To be charged by 2x150W Solar PV panel via 30A solar charger regulator for lights and entertainment, in an off-grid set up? but one recurring question in led acid batteries regular flooded,deep cycle type. Thank you Daniel for your reply! | _ _ _ _| +    raw n Power = Voltage * Current = 7.2V *6800mAh = 48.96Wh. connecting them in series is not an issue. What is the ideal way of discharging two Li-ion batteries connected in series? The load is to high or duration it is connected to power is too long. Of course, 4000 When running in series one can for example use a 2 cell and a 3 cell to easentially have a 5 cell lithium battery. But it’s not easy to change the connections with thick wires and screws two times at every cycle, I believe… What happens to the voltage when batteries are connected in series, in parallel and in anti series respectively? Tapping is not recommended because it creates a cell imbalance as one side of the battery bank is loaded more than the other. Connecting them in parallel requires special care to make sure they are precisely matched. Traditionally we get 24, 48 0r 96VDC banks connect to an invertor , which uses a transformer with setup up of 10, 5 or 2.5 to one to give us the desired 240 out. If the inverter is for 12V, the load current will not exceed 900VAx0.6/11V=45A and is divided into ~26A It is important to allow the engine to run for this long so the battery can charge properly. if i’ve four cells in serie connection, how is it possible to measure the voltage or monitor each voltages where there are no the same grounded point? I just wanted to leave a comment and say I wish I came across more information written this way and I’ll use this article to educate my son. Every season I balance them manually. This idea of doubling the output time without having to double the number of batteries is compelling. where can I find the answers to the above question? 3. loss of conversion during charging and huge heat build up, Suggest using 48V min even then look @ 420AH PoV expensive but last years verycommon and proven AVOID car batteries they are woftam (WASTE OF TIME AND FUXXXING MONEY) Also suggest a split sys,,get a 2nd Hand roof top upgrade with Grid tie in and use this as you DAYSHIFT Freezer,and high draw 240V..Build a skeleton 48Vsys for night shift, You have the perfect WOFTAM, and a perfect recipe for failure and heartbreak I recommend a 24V inverter because the currents at 12V will What’s better, you won’t be subject to any price increases that occur so you can rest easy, knowing servicing is covered. It’s a common problem with copyright protections etc., but the laptop obviously still runs on the power pack, just doesn’t charge the battery. + to - for series. Simply put those 2 banks of series batteries in parallel with each other. Go series NOT 12V parallel If you only read on this site you can find answers and you will learn enough to solve simple issues with batteries. I have some questions to ask and will be very happy if the knowledge gurus will assist me, thanks 2- Charging source voltage should be sum of the voltages of the two batteries. Very well written and explained in a great manner. BU-304: Why are Protection Circuits Needed? The higher the voltage of the battery the more difficult it is to detect the first cell going flat. Say i have two samsung inr18650 2500mAh 20A continuous amp limit batteries. 2. Li-manganese and other lithium-based systems often use cell voltages of 3.7V and higher. Put simply a fucking nightmare, The easiest would be to run a single string of 16 in Series to give 192 VDC @200 AH . And next time get lithium magnesium phosphate batteries and parallel series some of that…it’s much safer. Hello   Like humans, batteries are not identical each other. Good stuff. If you leave the charger connected you might damage it. will generate 48V theoritically (Open Circuit)... As far as the current requirement is concerned it will depend upon your load, and the C- rating of the LiFePh battery pack u’re using. If you switched polarity the 11.1V terminal and a 3.7V terminal would be right next to each other. ), I have a 6 volt DC system on an antique boat. i need a total of 2880 watts at 12V. about the same size as a small Tesla battery It wont store enough for high load AC or huge heaters but but will run them for a few hours as needed U should still be able to boil the kettle in the morning They would never reach an over-voltage during charge, but would they still be subjected to too high an amperage? Do not recharge non-rechargeable batteries; hydrogen buildup can lead to an explosion. Denne skjermen duger til begge deler! Have a nice day Vic. I only reply to this site when i’m at work. Learning about primary cells atm and they say never to connect cells of different types, why is that and does that rule comply with secondary cells???

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