# Battery & Chargers **URL:** https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=16 [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) **Page:** 17 --- ## [NEW BMS technology:energy balancing from Hipower](https://community.electricforum.com/t/new-bms-technology-energy-balancing-from-hipower/1368)
**Author:** [@hipowerkevin](https://community.electricforum.com/u/hipowerkevin)\ **Replies:** 0\ **Last updated:** [March 1, 2010, 2:09am UTC](https://community.electricforum.com/t/new-bms-technology-energy-balancing-from-hipower/1368 "2010-03-01T02:09:39Z")
Recently Hipower updated the new BMS of ENERGY BALANCING, which applied for patent, this new technology greatly improved the LifePO4 battery pack life and performance, Hipower BMS use energy balancing instead of load bal… --- ## [Doucumentary about Elecrtic Car Battery Production](https://community.electricforum.com/t/doucumentary-about-elecrtic-car-battery-production/1204)
**Author:** [@tdo1](https://community.electricforum.com/u/tdo1)\ **Replies:** 1\ **Last updated:** [February 5, 2010, 3:37pm UTC](https://community.electricforum.com/t/doucumentary-about-elecrtic-car-battery-production/1204 "2010-02-05T15:37:38Z")
Hi everyone, I am serving as a co-producer on an independent short documentary tentatively titled Trono de Oro that will shed light on many energy/environmental issues. The film will primarily focus on the indigenou… --- ## [Prius pack](https://community.electricforum.com/t/prius-pack/1352)
**Author:** [@Tom\_Thomson](https://community.electricforum.com/u/Tom_Thomson)\ **Replies:** 0\ **Last updated:** [February 4, 2010, 7:00pm UTC](https://community.electricforum.com/t/prius-pack/1352 "2010-02-04T19:00:26Z")
Has anyone tried the battery pack from a Toyota Prius? Has this subject been covered? tommyt --- ## [LiFePO4 20Ah cell, 30C rated and 467g. THE BEST cell presently available!](https://community.electricforum.com/t/lifepo4-20ah-cell-30c-rated-and-467g-the-best-cell-presently-available/1331)
**Author:** [@cell\_man](https://community.electricforum.com/u/cell_man)\ **Replies:** 1\ **Last updated:** [January 3, 2010, 7:40pm UTC](https://community.electricforum.com/t/lifepo4-20ah-cell-30c-rated-and-467g-the-best-cell-presently-available/1331 "2010-01-03T19:40:27Z")
I thought you guys might be interested in a cell that has recently become available. It's a Prismatic type cell in 15Ah and 20Ah capacity. Rated to approximately 30C with weight of only 401g and 467g for the 15Ah and 20A… --- ## [Which battery is cheapest per kW (I DO NOT mean kWh!) at which you can charge it?](https://community.electricforum.com/t/which-battery-is-cheapest-per-kw-i-do-not-mean-kwh-at-which-you-can-charge-it/1323)
**Author:** [@miernik](https://community.electricforum.com/u/miernik)\ **Replies:** 0\ **Last updated:** [December 2, 2009, 12:43am UTC](https://community.electricforum.com/t/which-battery-is-cheapest-per-kw-i-do-not-mean-kwh-at-which-you-can-charge-it/1323 "2009-12-02T00:43:40Z")
I am looking at which battery is the cheapest per kW rate at which it will accept charge (how fast can I charge the battery). How much charge will A123 cells really accept? If I calculate it for 4C it ammounts to 214 U… --- ## [Automatic v2g connector](https://community.electricforum.com/t/automatic-v2g-connector/1314)
**Author:** [@SuperBaby](https://community.electricforum.com/u/SuperBaby)\ **Replies:** 0\ **Last updated:** [November 9, 2009, 6:28am UTC](https://community.electricforum.com/t/automatic-v2g-connector/1314 "2009-11-09T06:28:19Z")
I found this at auto green blog: It's Friday: Swedish automatic PHEV charging prod gets a big WTF? from us \[w/VIDEO\] — Autoblog Green Looks funny but simple. Is it any other solutions that replaces the cable? --- ## [Reva NXR test drive](https://community.electricforum.com/t/reva-nxr-test-drive/1306)
**Author:** [@SolarCar](https://community.electricforum.com/u/SolarCar)\ **Replies:** 2\ **Last updated:** [October 29, 2009, 9:58am UTC](https://community.electricforum.com/t/reva-nxr-test-drive/1306 "2009-10-29T09:58:44Z")
At the Frankfurt Motor Show last month I had the opportunity to test drive a REVA NXR electric car. This car is going to be available in Europe early next year, and according to press reports will soon be built in the … --- ## [Cost Comparison by Car Model - All-In](https://community.electricforum.com/t/cost-comparison-by-car-model-all-in/1273)
**Author:** [@Brian\_Gilbert](https://community.electricforum.com/u/Brian_Gilbert)\ **Replies:** 1\ **Last updated:** [September 10, 2009, 10:01pm UTC](https://community.electricforum.com/t/cost-comparison-by-car-model-all-in/1273 "2009-09-10T22:01:38Z")
There is still debate as to whether Electric Cars are viable. A formula is needed so that a person can do the calculations for themself and decide whether an electric car is right for them and if so which. Please post yo… --- ## [Alternator built for high torque and high rpm](https://community.electricforum.com/t/alternator-built-for-high-torque-and-high-rpm/1221)
**Author:** [@benn8543](https://community.electricforum.com/u/benn8543)\ **Replies:** 0\ **Last updated:** [June 3, 2009, 1:32pm UTC](https://community.electricforum.com/t/alternator-built-for-high-torque-and-high-rpm/1221 "2009-06-03T13:32:24Z")
Can anyone direct me to a manufacturer or business that specializes in high torque/high rpm alternators? I need something that will be able to handle 5000 rpm and around 300 Nm of torque. Thanks. --- ## [Charging ststion](https://community.electricforum.com/t/charging-ststion/1193)
**Author:** [@Dustin\_C](https://community.electricforum.com/u/Dustin_C)\ **Replies:** 1\ **Last updated:** [May 5, 2009, 7:18am UTC](https://community.electricforum.com/t/charging-ststion/1193 "2009-05-05T07:18:54Z")
I cannot find a commercially avaiable charging station. I am writing a proposal and I need to include this. Any help. I would imagine it simple. a 40/50 amp 240 volt smart charger with 240 plug and a "pos" (point of … --- ## [EV disappointment](https://community.electricforum.com/t/ev-disappointment/1093)
**Author:** [@jgurley](https://community.electricforum.com/u/jgurley)\ **Replies:** 6\ **Last updated:** [April 29, 2009, 6:35am UTC](https://community.electricforum.com/t/ev-disappointment/1093 "2009-04-29T06:35:27Z")
I was all gung-ho to do an EV conversion, as I'm not thrilled with my Prius' mileage on short rural trips, but I now see that there isn't much to be gained. Until an EV is efficient enough to do better than 3mi/kw (or … --- ## [Charger Advice](https://community.electricforum.com/t/charger-advice/1043)
**Author:** [@Qmavam](https://community.electricforum.com/u/Qmavam)\ **Replies:** 3\ **Last updated:** [April 20, 2009, 9:28pm UTC](https://community.electricforum.com/t/charger-advice/1043 "2009-04-20T21:28:37Z")
I have my gokart working fine. I started with used junkyard batteries, Now I'm ready to invest in 4--12v deep cycle batteries, probably from Sam's. I need advice on a battery charger. With only 4 batteries I could wire f… --- ## [Thundersky Bulk Order](https://community.electricforum.com/t/thundersky-bulk-order/1175)
**Author:** [@Powered\_By\_DC](https://community.electricforum.com/u/Powered_By_DC)\ **Replies:** 0\ **Last updated:** [April 18, 2009, 5:12pm UTC](https://community.electricforum.com/t/thundersky-bulk-order/1175 "2009-04-18T17:12:28Z")
I am placing a Large order with TS on Wednesday of Next Week. Since there has been so much discussion about group buys I thought I would make you this offer. $1.10/AH plus actual shipping and customs duties. I can ge… --- ## [Inside the NIMH Battery](https://community.electricforum.com/t/inside-the-nimh-battery/1134)
**Author:** [@new\_dawn](https://community.electricforum.com/u/new_dawn)\ **Replies:** 1\ **Last updated:** [March 2, 2009, 9:59am UTC](https://community.electricforum.com/t/inside-the-nimh-battery/1134 "2009-03-02T09:59:41Z")
Here is a link to a pdf Cobasays put out on the Nickel Metal Hydride Battery Enjoy!!! http://www.cobasys.com/pdf/tutorial/inside\_nimh\_battery\_technology.pdf Also as a html http://74.6.239.67/search/cache?ei=UTF-8&p… --- ## [Carbon Film Batteries](https://community.electricforum.com/t/carbon-film-batteries/1133)
**Author:** [@new\_dawn](https://community.electricforum.com/u/new_dawn)\ **Replies:** 1\ **Last updated:** [February 27, 2009, 8:52am UTC](https://community.electricforum.com/t/carbon-film-batteries/1133 "2009-02-27T08:52:50Z")
Is this what we are waiting for? Lets hope they can develop this into a great replacement for the EV market:cool: http://gizmodo.com/5052974/carbon-nanotube-supercapacitors-may-replace-clunky-car-batteries http://www.g… --- ## [Can a laptop battery be used to power an e-bike?](https://community.electricforum.com/t/can-a-laptop-battery-be-used-to-power-an-e-bike/1120)
**Author:** [@jashhash](https://community.electricforum.com/u/jashhash)\ **Replies:** 1\ **Last updated:** [February 6, 2009, 4:19pm UTC](https://community.electricforum.com/t/can-a-laptop-battery-be-used-to-power-an-e-bike/1120 "2009-02-06T16:19:34Z")
Hi I'm new to this forum and I've been working on an idea for how to power a road bike. The plan is to use a 9 cell lithium ion laptop battery to power a 100 watt motor for my road bike. The reason why I want to use a … --- ## [Happy new year for all](https://community.electricforum.com/t/happy-new-year-for-all/1114)
**Author:** [@dfrhh](https://community.electricforum.com/u/dfrhh)\ **Replies:** 1\ **Last updated:** [January 30, 2009, 10:48pm UTC](https://community.electricforum.com/t/happy-new-year-for-all/1114 "2009-01-30T22:48:22Z")
Happy new year for all:) --- ## [BMS vs FreedomCar](https://community.electricforum.com/t/bms-vs-freedomcar/1083)
**Author:** [@tomcc](https://community.electricforum.com/u/tomcc)\ **Replies:** 0\ **Last updated:** [December 22, 2008, 7:11pm UTC](https://community.electricforum.com/t/bms-vs-freedomcar/1083 "2008-12-22T19:11:25Z")
Anyone knows what test/criteria in FreedomCar "standards" the BMS (battery management system) need to follow ? We are told the BMS need to meet FreedomCar requirements. --- ## [Have you used this solar charger? Does it work?](https://community.electricforum.com/t/have-you-used-this-solar-charger-does-it-work/1082)
**Author:** [@woterm](https://community.electricforum.com/u/woterm)\ **Replies:** 1\ **Last updated:** [December 22, 2008, 5:30pm UTC](https://community.electricforum.com/t/have-you-used-this-solar-charger-does-it-work/1082 "2008-12-22T17:30:55Z")
Last weekend, I watch an MP4 player solar charger online. Its function is so attractive. It can be used as either solar charger or MP4 player. It is amazing. Have you anyone used it? Have you known it? Here is the pictur… --- ## [LiFePO4 Batteries and Cells For Ieehoo company](https://community.electricforum.com/t/lifepo4-batteries-and-cells-for-ieehoo-company/1060)
**Author:** [@kdssd](https://community.electricforum.com/u/kdssd)\ **Replies:** 2\ **Last updated:** [December 3, 2008, 3:55am UTC](https://community.electricforum.com/t/lifepo4-batteries-and-cells-for-ieehoo-company/1060 "2008-12-03T03:55:38Z")
Shanghai Ieehoo International CO.LTD. is located in the beautiful Hi-Tech Zone of Nanhui in Shanghai With the world-class production equipment, a total investment of 100 million and a floor area of 120 Mu, they try to bu… --- ## [What do you guys think](https://community.electricforum.com/t/what-do-you-guys-think/1063)
**Author:** [@imaspaceguy90](https://community.electricforum.com/u/imaspaceguy90)\ **Replies:** 3\ **Last updated:** [December 2, 2008, 10:05am UTC](https://community.electricforum.com/t/what-do-you-guys-think/1063 "2008-12-02T10:05:14Z")
If i run 12 12v batteries in series to get 144v and the batteries are 100 ah. Does that mean i will only have a total of 100ah at 144v to use? If i lowered my voltage and and raised my AH by running some of the batteries… --- ## [Motorcycle batteries](https://community.electricforum.com/t/motorcycle-batteries/910)
**Author:** [@tufty1066](https://community.electricforum.com/u/tufty1066)\ **Replies:** 3\ **Last updated:** [November 29, 2008, 10:12pm UTC](https://community.electricforum.com/t/motorcycle-batteries/910 "2008-11-29T22:12:52Z")
hi all,i am building a electric motorcycle using a 72 volt set up,i was thinking of using gel batteries(possible weight saving),does anybody have any suggestions for best possible route?,cheers,paul:D. --- ## [LiFePO4 user](https://community.electricforum.com/t/lifepo4-user/1055)
**Author:** [@RIPPERTON](https://community.electricforum.com/u/RIPPERTON)\ **Replies:** 4\ **Last updated:** [November 25, 2008, 2:36pm UTC](https://community.electricforum.com/t/lifepo4-user/1055 "2008-11-25T14:36:46Z")
Hi people new guy here and im a LiFePO4 user. Albeit not in an EV but I have a 12v total loss battery powering the fuel pump and ECU in my Honda CBR1000RR track bike. These 4 cells cost me $195AUD but they are absolutely… --- ## [Given my requirements, have recomendations for what batt. to use?](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025)
**Author:** [@PATZKE](https://community.electricforum.com/u/PATZKE)\ **Replies:** 5\ **Last updated:** [November 19, 2008, 12:35pm UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025 "2008-11-19T12:35:53Z")
I've purchased all my components for my 1986 VW Golf EV conversion and have started to remove ICE, and start the long conversion process. When I fall asleep at night i still worry about what batteries to use ... hahah … --- ## [Crap, Someone beat me there](https://community.electricforum.com/t/crap-someone-beat-me-there/556)
**Author:** [@anghrist](https://community.electricforum.com/u/anghrist)\ **Replies:** 3\ **Last updated:** [October 10, 2008, 2:11pm UTC](https://community.electricforum.com/t/crap-someone-beat-me-there/556 "2008-10-10T14:11:58Z")
Novel idea, plus with some refinements there would be no need for "interaction" from the driver. The system could be totally automated. http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%… --- ## [Tesla Roadster - charging system for high voltage](https://community.electricforum.com/t/tesla-roadster-charging-system-for-high-voltage/541)
**Author:** [@watts\_up](https://community.electricforum.com/u/watts_up)\ **Replies:** 4\ **Last updated:** [September 21, 2008, 7:16am UTC](https://community.electricforum.com/t/tesla-roadster-charging-system-for-high-voltage/541 "2008-09-21T07:16:30Z")
In researching battery and motor combinations, I keep coming back to the Tesla system. I found the following details: "Battery packs consist of 11 identical groups of 621 lithium-ion cells (called sheets) connected in… --- ## [Battery Winter Storage](https://community.electricforum.com/t/battery-winter-storage/978)
**Author:** [@russen](https://community.electricforum.com/u/russen)\ **Replies:** 0\ **Last updated:** [September 19, 2008, 1:50pm UTC](https://community.electricforum.com/t/battery-winter-storage/978 "2008-09-19T13:50:50Z")
I am starting to convert a motorcycle using lithium ion but I was concerned about winter storage. I have read to discharge them to I believe it was 40% before long term storage. At the same time I've read performance d… --- ## [Opinions Regarding Boston Power Batteries](https://community.electricforum.com/t/opinions-regarding-boston-power-batteries/966)
**Author:** [@chiques](https://community.electricforum.com/u/chiques)\ **Replies:** 6\ **Last updated:** [September 12, 2008, 9:32am UTC](https://community.electricforum.com/t/opinions-regarding-boston-power-batteries/966 "2008-09-12T09:32:56Z")
I just heard a story on NPR about the quality of these batteries. They are a new design of the Li-Ion technology which makes them not explode like previous designs. I asked for some samples but they only sell them in pac… --- ## [A Few Questions About LIFEPO4](https://community.electricforum.com/t/a-few-questions-about-lifepo4/740)
**Author:** [@jmaurio](https://community.electricforum.com/u/jmaurio)\ **Replies:** 4\ **Last updated:** [September 11, 2008, 8:30pm UTC](https://community.electricforum.com/t/a-few-questions-about-lifepo4/740 "2008-09-11T20:30:44Z")
Hello everyone. I am in the planning stages of an electric car conversion. I am interested in using LIFEPO4 batteries (who isn't, right?). When I look Cloud EV for example, they indicate that their batteries come wit… --- ## [Questions about HWC4-144-8amp charger](https://community.electricforum.com/t/questions-about-hwc4-144-8amp-charger/944)
**Author:** [@BBrown](https://community.electricforum.com/u/BBrown)\ **Replies:** 2\ **Last updated:** [September 10, 2008, 7:08pm UTC](https://community.electricforum.com/t/questions-about-hwc4-144-8amp-charger/944 "2008-09-10T19:08:13Z")
I am about ready to hit the road, been working on my '99 Chevy S-10 since July 1; 144 volt pack of 24 6volt US-125 batteries. http://www.evalbum.com/2004 http://www.nabble.com/file/p18992351/4bae\_1.jpg Purchased an… [Previous page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=15) [Next page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=17)