# Battery & Chargers **URL:** https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=15 [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) **Page:** 16 --- ## [Does my Gem need new batteries](https://community.electricforum.com/t/does-my-gem-need-new-batteries/1589)
**Author:** [@DanGem](https://community.electricforum.com/u/DanGem)\ **Replies:** 2\ **Last updated:** [January 12, 2012, 10:48am UTC](https://community.electricforum.com/t/does-my-gem-need-new-batteries/1589 "2012-01-12T10:48:58Z")
When I put my gem in forward and push the pedal, it just sits there and surges. If I jack it up and push the pedal, the front wheels turn real slow. The batteries show charged up at 60%. When I plug the car into the … --- ## [How to Charge Lithium Ion Batteries?](https://community.electricforum.com/t/how-to-charge-lithium-ion-batteries/1026)
**Author:** [@chiques](https://community.electricforum.com/u/chiques)\ **Replies:** 1\ **Last updated:** [December 6, 2011, 4:29am UTC](https://community.electricforum.com/t/how-to-charge-lithium-ion-batteries/1026 "2011-12-06T04:29:12Z")
Are there any references on how to charge lithium ion arrays of cells? I have an EV book and it mentions in order to efficiently charge these batteries, a micro controller needs to keep tabs on the temperature, and the v… --- ## [Sterling Procharge Ultra Battery Charger Problems](https://community.electricforum.com/t/sterling-procharge-ultra-battery-charger-problems/1809)
**Author:** [@insane.nick](https://community.electricforum.com/u/insane.nick)\ **Replies:** 0\ **Last updated:** [November 22, 2011, 12:04am UTC](https://community.electricforum.com/t/sterling-procharge-ultra-battery-charger-problems/1809 "2011-11-22T00:04:07Z")
I bought a new Sterling Procharge Ultra battery charger, installed it and set it according to the instructions. For the first few months it seemed to charge okay and then it stopped. The charger was on but it didn't char… --- ## [Large Scale NiMH Charger](https://community.electricforum.com/t/large-scale-nimh-charger/365)
**Author:** [@Metalo](https://community.electricforum.com/u/Metalo)\ **Replies:** 4\ **Last updated:** [November 22, 2011, 12:00am UTC](https://community.electricforum.com/t/large-scale-nimh-charger/365 "2011-11-22T00:00:49Z")
I have been doing studies on what type of battery I want to put into my EV project. The results of my studies almost all pointed to NiMHs being the best choice. They could give me the most power, the most capasity, and t… --- ## [1 Battery? or Many Batteries?](https://community.electricforum.com/t/1-battery-or-many-batteries/304)
**Author:** [@FEUS](https://community.electricforum.com/u/FEUS)\ **Replies:** 19\ **Last updated:** [October 14, 2011, 9:51pm UTC](https://community.electricforum.com/t/1-battery-or-many-batteries/304 "2011-10-14T21:51:46Z")
Is it better to have one big battery? or many smaller batteries? and if so, why? i could see why many smaller batteries would help prevent hot spots and melting/burning, but if you had a thin battery with addiquite he… --- ## [What are the best batteries to use?](https://community.electricforum.com/t/what-are-the-best-batteries-to-use/687)
**Author:** [@Madman](https://community.electricforum.com/u/Madman)\ **Replies:** 19\ **Last updated:** [October 14, 2011, 9:49pm UTC](https://community.electricforum.com/t/what-are-the-best-batteries-to-use/687 "2011-10-14T21:49:30Z")
From a comparison of price/how long they last each charge/life? --- ## [Gem eating batteries](https://community.electricforum.com/t/gem-eating-batteries/1567)
**Author:** [@G-stone](https://community.electricforum.com/u/G-stone)\ **Replies:** 3\ **Last updated:** [October 12, 2011, 7:41am UTC](https://community.electricforum.com/t/gem-eating-batteries/1567 "2011-10-12T07:41:46Z")
Hello:yo: I have a 07 EL that had the gel batteries. i replaced them a year ago and now needed them again. so i replaced them with the Deka G31 like everybody does. and now there bad again:confused:. I took it to the… --- ## [Charging overseas](https://community.electricforum.com/t/charging-overseas/1711)
**Author:** [@bruce\_hamme](https://community.electricforum.com/u/bruce_hamme)\ **Replies:** 0\ **Last updated:** [August 26, 2011, 1:27pm UTC](https://community.electricforum.com/t/charging-overseas/1711 "2011-08-26T13:27:01Z")
i'm shipping my 2009 elxd to england for work. does anyone know if i can just use a 220 to 110 down converter for charging the vehicle. if so what wattage would i need. i see 100w thru 5000w converters for sale. it charg… --- ## [Help with LiFePO4 battery problems](https://community.electricforum.com/t/help-with-lifepo4-battery-problems/1656)
**Author:** [@Leckyman](https://community.electricforum.com/u/Leckyman)\ **Replies:** 1\ **Last updated:** [August 25, 2011, 4:02am UTC](https://community.electricforum.com/t/help-with-lifepo4-battery-problems/1656 "2011-08-25T04:02:43Z")
I own a Huasha HS50QT7 electric scooter with a 1.5kW motor. It was powered by 4 Greensaver 12 v 38ah Silicon Lead acid batteries connected in series, with a household circuit breaker in circuit. The range was poor as two… --- ## [Century 1200 CCA - 430min](https://community.electricforum.com/t/century-1200-cca-430min/1003)
**Author:** [@Bombardier](https://community.electricforum.com/u/Bombardier)\ **Replies:** 2\ **Last updated:** [August 10, 2011, 7:56am UTC](https://community.electricforum.com/t/century-1200-cca-430min/1003 "2011-08-10T07:56:20Z")
I have access to these types of batteries (used but reformable) for free. They weigh about 55kg. Are they a realistic proposition for an EV? --- ## [Whether it is pratical or not?](https://community.electricforum.com/t/whether-it-is-pratical-or-not/1411)
**Author:** [@Cathrine](https://community.electricforum.com/u/Cathrine)\ **Replies:** 1\ **Last updated:** [June 29, 2011, 1:24am UTC](https://community.electricforum.com/t/whether-it-is-pratical-or-not/1411 "2011-06-29T01:24:00Z")
recently i got in trouble,my new car seems to have some problems. it always make strange noise. i don't know what happened. i was worried. one of my friend told that i should buy a maintenance tool for my car. he … --- ## [Alliance Renewable Energy customer experience](https://community.electricforum.com/t/alliance-renewable-energy-customer-experience/1619)
**Author:** [@noleanderthegreat](https://community.electricforum.com/u/noleanderthegreat)\ **Replies:** 1\ **Last updated:** [June 3, 2011, 2:00pm UTC](https://community.electricforum.com/t/alliance-renewable-energy-customer-experience/1619 "2011-06-03T14:00:34Z")
Has anyone purchased from them? I am not sure if they can be trusted. feedback would be greatly appreciated. :fish2: --- ## [Ask about Ford Rotunda Dealer IDS VCM](https://community.electricforum.com/t/ask-about-ford-rotunda-dealer-ids-vcm/1481)
**Author:** [@BellaCai](https://community.electricforum.com/u/BellaCai)\ **Replies:** 1\ **Last updated:** [May 26, 2011, 4:38am UTC](https://community.electricforum.com/t/ask-about-ford-rotunda-dealer-ids-vcm/1481 "2011-05-26T04:38:14Z")
I want to buy a diagnostic tool,so they advice me this tool any body know it well?:rolleyes: :der: my car is old ford 1998 mod,and i saw this item on autodiag.de website so if you know this,please help me :clap2: thank… --- ## [About batteries](https://community.electricforum.com/t/about-batteries/1601)
**Author:** [@IR.Diode](https://community.electricforum.com/u/IR.Diode)\ **Replies:** 0\ **Last updated:** [May 7, 2011, 6:43pm UTC](https://community.electricforum.com/t/about-batteries/1601 "2011-05-07T18:43:30Z")
Hi guys, I wanna ask about batteries. what batteries did you use for your builds? :confused: Im thinking of making a 24v dc electric trike and I thought if I can make it lighter then it would not be slow and also saves e… --- ## [Testing for batteries problem](https://community.electricforum.com/t/testing-for-batteries-problem/1577)
**Author:** [@judy366](https://community.electricforum.com/u/judy366)\ **Replies:** 0\ **Last updated:** [March 30, 2011, 4:02am UTC](https://community.electricforum.com/t/testing-for-batteries-problem/1577 "2011-03-30T04:02:16Z")
Many EV researcher nearly have batteries problem,usually they need some way to test their batteries' performance,capacity/energy/SOC/charge-discharge perfor etc... like the photo above, a tester can help you to set any… --- ## [SmartGarage project - Norwegian University of Science & Technology](https://community.electricforum.com/t/smartgarage-project-norwegian-university-of-science-technology/1566)
**Author:** [@EIT](https://community.electricforum.com/u/EIT)\ **Replies:** 0\ **Last updated:** [February 22, 2011, 2:53pm UTC](https://community.electricforum.com/t/smartgarage-project-norwegian-university-of-science-technology/1566 "2011-02-22T14:53:48Z")
We are a group of students working on a project at the Norwegian University of Science & Technology regarding electric vehicles. The project name is “The Smart Garage”, and we want to outline a garage with a collection o… --- ## [Altinator charging](https://community.electricforum.com/t/altinator-charging/614)
**Author:** [@cummins\_king](https://community.electricforum.com/u/cummins_king)\ **Replies:** 7\ **Last updated:** [February 19, 2011, 8:30pm UTC](https://community.electricforum.com/t/altinator-charging/614 "2011-02-19T20:30:14Z")
hi dot know if this belongs hear but .... i was thinking would it work to run a hi volt low amp altinator off the rear wheel and feed the power back into that batterys, so as your driving your charging your batterys, s… --- ## [Any tricks to revival of old lead/acid batteries](https://community.electricforum.com/t/any-tricks-to-revival-of-old-lead-acid-batteries/698)
**Author:** [@parts68](https://community.electricforum.com/u/parts68)\ **Replies:** 4\ **Last updated:** [February 11, 2011, 11:10am UTC](https://community.electricforum.com/t/any-tricks-to-revival-of-old-lead-acid-batteries/698 "2011-02-11T11:10:58Z")
I just bought an old golf cart used for a maintenance shop and the batteries need a kick. Ive heard tricks of aspirin and some powder thats sold at Wally World.I also see one on ebay selling these tricks for $10,and anot… --- ## [Zinc Air](https://community.electricforum.com/t/zinc-air/1512)
**Author:** [@new\_dawn](https://community.electricforum.com/u/new_dawn)\ **Replies:** 1\ **Last updated:** [February 11, 2011, 10:58am UTC](https://community.electricforum.com/t/zinc-air/1512 "2011-02-11T10:58:43Z")
Here is something else I found that may be promising for us. http://www.electric-fuel.com/evtech/index.shtml http://www.electric-fuel.com/evtech/EF-tech-brochure.pdf new dawn, as in the dawning of a new era --- ## [New Bike, Whats the Problem](https://community.electricforum.com/t/new-bike-whats-the-problem/1431)
**Author:** [@gurkus](https://community.electricforum.com/u/gurkus)\ **Replies:** 1\ **Last updated:** [January 18, 2011, 10:43am UTC](https://community.electricforum.com/t/new-bike-whats-the-problem/1431 "2011-01-18T10:43:13Z")
So i just bought a new EV motorcycle :whoo: but it seems as if there is a problem. No matter what the level of charge is when the bike is standing still the meter reads full. If I go out on a ride thinking its full and… --- ## [Enerdel](https://community.electricforum.com/t/enerdel/1474)
**Author:** [@Tom\_Thomson](https://community.electricforum.com/u/Tom_Thomson)\ **Replies:** 2\ **Last updated:** [December 29, 2010, 1:56pm UTC](https://community.electricforum.com/t/enerdel/1474 "2010-12-29T13:56:27Z")
The Indianapolis Star published an article about Enerdel's new production plant for lithiums in Indiana. In looking at their web site I find only vague, pie-in-the-sky day-dreaming. Where can I get hard info? … --- ## [Ultra Battery](https://community.electricforum.com/t/ultra-battery/1511)
**Author:** [@new\_dawn](https://community.electricforum.com/u/new_dawn)\ **Replies:** 0\ **Last updated:** [October 26, 2010, 7:45pm UTC](https://community.electricforum.com/t/ultra-battery/1511 "2010-10-26T19:45:56Z")
Here is a response from Austrailia I got on the new ultra battery Dear Bob, Thank you for your enquiry regarding the UltraBattery forwarded to Enquiries from Kirsten Lea at CSIRO Energy Technology. Note that this re… --- ## [LiFePo4 Battery, EV battery, E-bike battery](https://community.electricforum.com/t/lifepo4-battery-ev-battery-e-bike-battery/1498)
**Author:** [@joolee](https://community.electricforum.com/u/joolee)\ **Replies:** 0\ **Last updated:** [October 16, 2010, 12:34am UTC](https://community.electricforum.com/t/lifepo4-battery-ev-battery-e-bike-battery/1498 "2010-10-16T00:34:40Z")
JooLee Battery is a professional manufacturer of LiFePo4 battery use to e-bike, power tools, toys, aircraft, Auto car, Bus, Scooter and so on. 5Ah to 1500Ah of the capacity and 3V to 550V of the Voltage. Delivery time i… --- ## [Gel/VRLA industrial and marine battery,lifepo4 battery available](https://community.electricforum.com/t/gel-vrla-industrial-and-marine-battery-lifepo4-battery-available/1465)
**Author:** [@dalian\_btr](https://community.electricforum.com/u/dalian_btr)\ **Replies:** 0\ **Last updated:** [August 23, 2010, 11:56pm UTC](https://community.electricforum.com/t/gel-vrla-industrial-and-marine-battery-lifepo4-battery-available/1465 "2010-08-23T23:56:24Z")
This is Pamela from China,Welcome to our web DALIAN BAITERUI ELECTRIC VEHICLE TRADE CO.,LTD. :slight\_smile: when you need,just send a inquiry to dlbtr@hotmail.com --- ## [Parrallel?](https://community.electricforum.com/t/parrallel/1444)
**Author:** [@SA\_Mini](https://community.electricforum.com/u/SA_Mini)\ **Replies:** 0\ **Last updated:** [July 21, 2010, 3:52am UTC](https://community.electricforum.com/t/parrallel/1444 "2010-07-21T03:52:36Z")
I am planning my EV, one question... Can I do a 48v setup with 8 x 12v deepcycle batteries? 4 in series, 4 in series and those 2 cells in parrallel? What is the downside to this?:confused: --- ## [Efficiency of charging - meter amount/charge vs. battery kwh](https://community.electricforum.com/t/efficiency-of-charging-meter-amount-charge-vs-battery-kwh/1398)
**Author:** [@wsbca](https://community.electricforum.com/u/wsbca)\ **Replies:** 0\ **Last updated:** [April 17, 2010, 3:51pm UTC](https://community.electricforum.com/t/efficiency-of-charging-meter-amount-charge-vs-battery-kwh/1398 "2010-04-17T15:51:10Z")
In general, how efficient is the act of charging a battery? For example, the battery for the Leaf is supposed to hold 23kW-h. How much, in kW-h going through your electric meter is it likely to take to get a kW-h into… --- ## [LiFePO4 battery of Changhe Power in China](https://community.electricforum.com/t/lifepo4-battery-of-changhe-power-in-china/1378)
**Author:** [@yuki.yang](https://community.electricforum.com/u/yuki.yang)\ **Replies:** 1\ **Last updated:** [April 16, 2010, 2:18pm UTC](https://community.electricforum.com/t/lifepo4-battery-of-changhe-power-in-china/1378 "2010-04-16T14:18:24Z")
As one of the pioneers of Li-ion battery manufacturing in China, Changhe Power has been engaging in R&D and producing Li-ion battery for more than 10 years. Products range from traditional Li-ion polymer to LiFePO4 batte… --- ## [Electric moped and human error](https://community.electricforum.com/t/electric-moped-and-human-error/1377)
**Author:** [@system](https://community.electricforum.com/u/system)\ **Replies:** 0\ **Last updated:** [March 11, 2010, 5:42am UTC](https://community.electricforum.com/t/electric-moped-and-human-error/1377 "2010-03-11T05:42:29Z")
I've just bought an electric moped which is great but I'm having serious problems with parking it. The trouble is that I am a cyclist who is used to getting off a bike and pushing it into place, not a driver who is use… --- ## [98 Ford Ranger EV Battery Testing](https://community.electricforum.com/t/98-ford-ranger-ev-battery-testing/1375)
**Author:** [@98rangerev](https://community.electricforum.com/u/98rangerev)\ **Replies:** 1\ **Last updated:** [March 8, 2010, 1:46pm UTC](https://community.electricforum.com/t/98-ford-ranger-ev-battery-testing/1375 "2010-03-08T13:46:18Z")
Hi guys! Newbie here :slight\_smile: Im supposed to help out in a project at college concerning a 1998 FORD RANGER EV with lead acid batteries. The car has been sitting for a few years I think. We want to get it starte… --- ## [Test Report of Hipower 3.2V 100AH discharge curve](https://community.electricforum.com/t/test-report-of-hipower-3-2v-100ah-discharge-curve/1370)
**Author:** [@hipowerkevin](https://community.electricforum.com/u/hipowerkevin)\ **Replies:** 0\ **Last updated:** [March 4, 2010, 7:46pm UTC](https://community.electricforum.com/t/test-report-of-hipower-3-2v-100ah-discharge-curve/1370 "2010-03-04T19:46:39Z")
In January, 2010, our company, Shandong Hipower new energy group, sends 48V100AH LifePO4 Battery Pack to Shanghai for battery performance test. With\*the test\*data\*automatic\*generated,theoriginal\*Excel\*documents\*is\*about\* … [Previous page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=14) [Next page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=16)