# Battery & Chargers **URL:** https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=17 [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) **Page:** 18 --- ## [Serial/Parallel Battery strings](https://community.electricforum.com/t/serial-parallel-battery-strings/939)
**Author:** [@rrmendoza](https://community.electricforum.com/u/rrmendoza)\ **Replies:** 5\ **Last updated:** [September 9, 2008, 4:14pm UTC](https://community.electricforum.com/t/serial-parallel-battery-strings/939 "2008-09-09T16:14:12Z")
I would like to have 2 strings of 12v x 8 batteries, each battery is 55amp, in order to end up with 96v 110amp. I've researched it quite a bit, but I just need a little validation. If someone could review the attached… --- ## [How much brand name do we pay for when buying ... OPTIMA batteries](https://community.electricforum.com/t/how-much-brand-name-do-we-pay-for-when-buying-optima-batteries/847)
**Author:** [@PATZKE](https://community.electricforum.com/u/PATZKE)\ **Replies:** 2\ **Last updated:** [August 25, 2008, 2:18pm UTC](https://community.electricforum.com/t/how-much-brand-name-do-we-pay-for-when-buying-optima-batteries/847 "2008-08-25T14:18:37Z")
Are OPTIMA/and similar batteries THAT much better than your other standard deep cycle marine 105 AH HR batteries at Checker for 95$ ? What does the Optima battery cost $200 where as the equivalent of that battery would… --- ## [Could Sonnenschein Prevailer Dryfit German DF Series SLA GEL batteries work for a EV?](https://community.electricforum.com/t/could-sonnenschein-prevailer-dryfit-german-df-series-sla-gel-batteries-work-for-a-ev/899)
**Author:** [@Motorsport\_E](https://community.electricforum.com/u/Motorsport_E)\ **Replies:** 0\ **Last updated:** [August 10, 2008, 10:49pm UTC](https://community.electricforum.com/t/could-sonnenschein-prevailer-dryfit-german-df-series-sla-gel-batteries-work-for-a-ev/899 "2008-08-10T22:49:01Z")
While looking into battery weights for my upcoming build I came across a page comparing the typical lead acid battery to these Sonnenschein Prevailer Dryfit German DF Series SLA GEL batteries and Optima batteries. Here'… --- ## [Charging question](https://community.electricforum.com/t/charging-question/886)
**Author:** [@ragee](https://community.electricforum.com/u/ragee)\ **Replies:** 0\ **Last updated:** [August 4, 2008, 5:45pm UTC](https://community.electricforum.com/t/charging-question/886 "2008-08-04T17:45:04Z")
I have got a quickcharge 220v charger as listed. It has got 2 different settings for wet lead acid batteries. F2= "Gas and shut off mode, charges battteries to 2.3v per cell where a timed gas cycle is initiated. The… --- ## [What do you think of these?](https://community.electricforum.com/t/what-do-you-think-of-these/864)
**Author:** [@MikesTrikes](https://community.electricforum.com/u/MikesTrikes)\ **Replies:** 0\ **Last updated:** [July 30, 2008, 9:48am UTC](https://community.electricforum.com/t/what-do-you-think-of-these/864 "2008-07-30T09:48:40Z")
http://www.atbatt.com/product/3617.asp --- ## [OMG ! Trojan's = $$$](https://community.electricforum.com/t/omg-trojans/853)
**Author:** [@MikesTrikes](https://community.electricforum.com/u/MikesTrikes)\ **Replies:** 0\ **Last updated:** [July 25, 2008, 1:00pm UTC](https://community.electricforum.com/t/omg-trojans/853 "2008-07-25T13:00:48Z")
$398 EACH !!!! They say the best but man Optamas are looking better & better.... --- ## [Help a Noob! :) (Battery Questions)](https://community.electricforum.com/t/help-a-noob-battery-questions/758)
**Author:** [@PATZKE](https://community.electricforum.com/u/PATZKE)\ **Replies:** 31\ **Last updated:** [July 25, 2008, 12:46am UTC](https://community.electricforum.com/t/help-a-noob-battery-questions/758 "2008-07-25T00:46:17Z")
Ok, so idealy speaking, i would like to be able to go 50 ~ 55 MPH and go at the very least 20 miles, and preferably 30 miles round trip to be safe. It's 8 miles to work, and the furthest i would ever really drive is 15~ … --- ## [Opinions on West Marine dual purpose batteries](https://community.electricforum.com/t/opinions-on-west-marine-dual-purpose-batteries/827)
**Author:** [@bokonnon](https://community.electricforum.com/u/bokonnon)\ **Replies:** 2\ **Last updated:** [July 17, 2008, 1:24am UTC](https://community.electricforum.com/t/opinions-on-west-marine-dual-purpose-batteries/827 "2008-07-17T01:24:15Z")
I've been scouring the internet looking for a balance between the highly priced deep cycle batteries (like the Trojan T-105 and Optima D31) and something a bit more economical that won't leave me dead on the side of the … --- ## [Charger questions](https://community.electricforum.com/t/charger-questions/717)
**Author:** [@parts68](https://community.electricforum.com/u/parts68)\ **Replies:** 1\ **Last updated:** [July 14, 2008, 8:39pm UTC](https://community.electricforum.com/t/charger-questions/717 "2008-07-14T20:39:25Z")
I just got a 36V golf cart and am in process of dialing in a rectifier for charging. Can someone tell me what the battery voltage should be when fully charged? All 6 batterys seem to be in good shape all passing a load t… --- ## [Car v cart batts?](https://community.electricforum.com/t/car-v-cart-batts/690)
**Author:** [@CO\_BOB](https://community.electricforum.com/u/CO_BOB)\ **Replies:** 7\ **Last updated:** [June 26, 2008, 4:50pm UTC](https://community.electricforum.com/t/car-v-cart-batts/690 "2008-06-26T16:50:40Z")
Regarding flooded cell batts, I hear the Trojan T105 is popular. But costs $125 and up. But I can get any old Exide 12V car batt for $65. So what am I missing? --- ## [Making Battery Packs](https://community.electricforum.com/t/making-battery-packs/720)
**Author:** [@awberke](https://community.electricforum.com/u/awberke)\ **Replies:** 3\ **Last updated:** [June 10, 2008, 12:58pm UTC](https://community.electricforum.com/t/making-battery-packs/720 "2008-06-10T12:58:38Z")
Hey guys, i've been browsing this forum because i'm finding electric motors and batteries extremely fascinating and i always love a good project. So i've just been researching battery methods because it seems this can… --- ## [Another battery breakthrough](https://community.electricforum.com/t/another-battery-breakthrough/545)
**Author:** [@Lectrol](https://community.electricforum.com/u/Lectrol)\ **Replies:** 5\ **Last updated:** [May 29, 2008, 12:08pm UTC](https://community.electricforum.com/t/another-battery-breakthrough/545 "2008-05-29T12:08:43Z")
The more the better!! http://news-service.stanford.edu/pr/2007/pr-nanowire-010908.html --- ## [Development Kit?](https://community.electricforum.com/t/development-kit/686)
**Author:** [@Madman](https://community.electricforum.com/u/Madman)\ **Replies:** 1\ **Last updated:** [May 24, 2008, 8:56pm UTC](https://community.electricforum.com/t/development-kit/686 "2008-05-24T20:56:12Z")
http://www.buya123systems.com/prdeki.html These are supposedly pretty good batteries. Would it be possible to get a lot of them and use in a EV? --- ## [Lithium ion](https://community.electricforum.com/t/lithium-ion/577)
**Author:** [@adagan](https://community.electricforum.com/u/adagan)\ **Replies:** 4\ **Last updated:** [May 24, 2008, 1:15pm UTC](https://community.electricforum.com/t/lithium-ion/577 "2008-05-24T13:15:24Z")
Does anyone have any tips or instructions for converting a car using lithium ion batteries. Thanks. --- ## [Best battery yet](https://community.electricforum.com/t/best-battery-yet/675)
**Author:** [@Bernie](https://community.electricforum.com/u/Bernie)\ **Replies:** 0\ **Last updated:** [May 21, 2008, 3:53am UTC](https://community.electricforum.com/t/best-battery-yet/675 "2008-05-21T03:53:01Z")
http://news-service.stanford.edu/pr/2007/pr-nanowire-010908.html:slight\_smile: --- ## [What do you all think of these?](https://community.electricforum.com/t/what-do-you-all-think-of-these/643)
**Author:** [@Favguy](https://community.electricforum.com/u/Favguy)\ **Replies:** 3\ **Last updated:** [May 1, 2008, 11:08am UTC](https://community.electricforum.com/t/what-do-you-all-think-of-these/643 "2008-05-01T11:08:34Z")
Hi all, I Just wanted to bring these to your attention, they are on my shortlist for batteries for my upcoming project, but seem ideal. Lead acid Batts. with carbon fibre plate technology, 20% lighter than standard, se… --- ## [What do you like best?](https://community.electricforum.com/t/what-do-you-like-best/374)
**Author:** [@gregor413](https://community.electricforum.com/u/gregor413)\ **Replies:** 7\ **Last updated:** [April 26, 2008, 6:54am UTC](https://community.electricforum.com/t/what-do-you-like-best/374 "2008-04-26T06:54:47Z")
I was planning to go with Optima yellow tops but I am curious to see what others have used and which ones are liked and unliked. --- ## [Capacitors?](https://community.electricforum.com/t/capacitors/319)
**Author:** [@Lazlow](https://community.electricforum.com/u/Lazlow)\ **Replies:** 5\ **Last updated:** [January 23, 2008, 12:43pm UTC](https://community.electricforum.com/t/capacitors/319 "2008-01-23T12:43:04Z")
Hey Guys This is my first post on this forum. I have been looking over the conversion topic and it seems to me that the most important factors are battery weight and battery longevity. A lot of people that are using le… --- ## [Carbon Foam Battery](https://community.electricforum.com/t/carbon-foam-battery/488)
**Author:** [@new\_dawn](https://community.electricforum.com/u/new_dawn)\ **Replies:** 1\ **Last updated:** [December 23, 2007, 7:17pm UTC](https://community.electricforum.com/t/carbon-foam-battery/488 "2007-12-23T19:17:12Z")
Here is a site from another fourm I belong to. http://fireflyenergy.com/ http://www.fireflyenergy.com/images/stories/pdfs/FFE-27Grp31BatteryBro10%5B1%5D.25.07\_FINAL.pdf http://www.fireflyenergy.com/images/stories/p… --- ## [YAY New solar technology is officially for sale and cheap!](https://community.electricforum.com/t/yay-new-solar-technology-is-officially-for-sale-and-cheap/493)
**Author:** [@FEUS](https://community.electricforum.com/u/FEUS)\ **Replies:** 5\ **Last updated:** [December 19, 2007, 5:15pm UTC](https://community.electricforum.com/t/yay-new-solar-technology-is-officially-for-sale-and-cheap/493 "2007-12-19T17:15:42Z")
Unlike a lot of other energy-crisis solving tech that bursts into vapor at the last minute, the award-winning and groundbreaking Nanosolar PowerSheets are actually on sale today. They’re super cheap, ultra-adaptable… --- ## [Battery watering systems](https://community.electricforum.com/t/battery-watering-systems/438)
**Author:** [@Stimpy](https://community.electricforum.com/u/Stimpy)\ **Replies:** 0\ **Last updated:** [October 26, 2007, 1:32pm UTC](https://community.electricforum.com/t/battery-watering-systems/438 "2007-10-26T13:32:37Z")
thought I'd share info and opinion on different single point watering systems for lead acid batteries. I work with them and see them used and abused every day. I'm not sure all these companies sell retail, but battery … --- ## [New hope for Practical Solar](https://community.electricforum.com/t/new-hope-for-practical-solar/434)
**Author:** [@Lectrol](https://community.electricforum.com/u/Lectrol)\ **Replies:** 1\ **Last updated:** [October 26, 2007, 6:56am UTC](https://community.electricforum.com/t/new-hope-for-practical-solar/434 "2007-10-26T06:56:26Z")
Before I started out to build my EV, i considered using PV panels, or Photovoltaic panels on my car. After punching the numbers, the idea was shot down by very unsubstantial numbers. Just recently i did some more researc… --- ## [Lithium Polymer Battery (Abbreviated LI-Poly or LiPo)](https://community.electricforum.com/t/lithium-polymer-battery-abbreviated-li-poly-or-lipo/281)
**Author:** [@system](https://community.electricforum.com/u/system)\ **Replies:** 23\ **Last updated:** [October 14, 2007, 4:24pm UTC](https://community.electricforum.com/t/lithium-polymer-battery-abbreviated-li-poly-or-lipo/281 "2007-10-14T16:24:21Z")
Lithium Polymer Battery (Abbreviated LI-Poly or LiPo) Lithium Polymer Batteries are rechargeable batteries that have been technologically derived and advanced from a standard Lithium Ion Battery used widely in laptops … --- ## [Why do Packs seem to stop at 36V?](https://community.electricforum.com/t/why-do-packs-seem-to-stop-at-36v/388)
**Author:** [@rsisson](https://community.electricforum.com/u/rsisson)\ **Replies:** 3\ **Last updated:** [October 6, 2007, 10:55am UTC](https://community.electricforum.com/t/why-do-packs-seem-to-stop-at-36v/388 "2007-10-06T10:55:10Z")
I am in the process of building a "fun" vehicle for trips to the Grocery and the like rather than dragging out the dino-eater. I will be a 4-wheel bicycle kit with a 900W Hub motor. Now the issue... The motor is base… --- ## [Battery life](https://community.electricforum.com/t/battery-life/391)
**Author:** [@Tom\_Thomson](https://community.electricforum.com/u/Tom_Thomson)\ **Replies:** 2\ **Last updated:** [August 29, 2007, 5:03pm UTC](https://community.electricforum.com/t/battery-life/391 "2007-08-29T17:03:03Z")
A friend of mine told me that he had heard that 6v batterys last longer physically than 12s. I can't think of any reason for this to be true but maybe it is. Can anyone speak to this? … --- ## [Retrofitting with higher capasity](https://community.electricforum.com/t/retrofitting-with-higher-capasity/344)
**Author:** [@Malawi](https://community.electricforum.com/u/Malawi)\ **Replies:** 4\ **Last updated:** [July 15, 2007, 4:34pm UTC](https://community.electricforum.com/t/retrofitting-with-higher-capasity/344 "2007-07-15T16:34:47Z")
Hi I am thinking of buying an EV, but I need a bit more range than what they normaly deliver. Luckily, it will come without batteries. Basicaly, I am looking for batteries that give at least 50% more power. An alte… --- ## [Here is the Future of Batteries for cars](https://community.electricforum.com/t/here-is-the-future-of-batteries-for-cars/326)
**Author:** [@FEUS](https://community.electricforum.com/u/FEUS)\ **Replies:** 13\ **Last updated:** [June 28, 2007, 11:44pm UTC](https://community.electricforum.com/t/here-is-the-future-of-batteries-for-cars/326 "2007-06-28T23:44:34Z")
\[ame\]http://www.youtube.com/watch?v=P8UwBP4yVgM&mode=related&search=\[/ame\] light weight, green, eventually can be cheap, small, and great shelf life. [Previous page](https://community.electricforum.com/c/engines-batteries-and-charging-systems/67.md?page=16)