# Given my requirements, have recomendations for what batt. to use?

**URL:** <https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025>\
**Category:** Battery & Chargers\
**Created:** [October 30, 2008, 1:18am UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025 "2008-10-30T01:18:31Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![PATZKE](https://avatars.discourse-cdn.com/v4/letter/p/45deac/32.png) [@PATZKE](https://community.electricforum.com/u/PATZKE)\
**Post date:** [October 30, 2008, 1:18am UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025/1 "2008-10-30T01:18:31Z")

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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

I’m using  
a WaRP impulse 9"  
500A controller (i beleive i’d have to check)  
120V system  
6v or 12V batteries are fine.

i would love to keep the cost of my pack below 2000

My goals:  
at the very least 30miles  
Avg spd of ~45mph would be ideal

Know of any batteries that would work for my situation!? 😃  
Or at least some battery specs I should try and meet/exceed?

Any help is greatly appreciated!

Nick

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**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\
**Post date:** [October 30, 2008, 9:40am UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025/2 "2008-10-30T09:40:32Z")

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well, figure about 300Wh/milefor a car, 45 miles or range would give you about 13,500Wh of power needed. overshoot a little for peukert and inefficiencies.

that’d be 120V (10 batteries) with 120Ah or so (14,400Wh pack).

Start looking for something that’d give you those numbers 12V 120Ah batteries.

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**Author:** ![PATZKE](https://avatars.discourse-cdn.com/v4/letter/p/45deac/32.png) [@PATZKE](https://community.electricforum.com/u/PATZKE)\
**Post date:** [October 31, 2008, 2:46pm UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025/3 "2008-10-31T14:46:28Z")

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frodus,

thank you so much.

i’ve run those same numbers many of times, and thats what i’ve gotten.

thanks for double checking my guess. 🙂 i’ll search.

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**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\
**Post date:** [October 31, 2008, 3:37pm UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025/4 "2008-10-31T15:37:46Z")

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no problem…

Its better to overshoot a little … or reconsider your range requirements.

Good luck! keep a blog or EValbum entry though, for others to follow.

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**Author:** ![naiche](https://avatars.discourse-cdn.com/v4/letter/n/9f8e36/32.png) [@naiche](https://community.electricforum.com/u/naiche)\
**Post date:** [November 19, 2008, 9:21am UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025/5 "2008-11-19T09:21:29Z")

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don’t forget the 8V option, kind of a happy medium for lead acid.

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**Author:** ![frodus](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frodus](https://community.electricforum.com/u/frodus)\
**Post date:** [November 19, 2008, 12:35pm UTC](https://community.electricforum.com/t/given-my-requirements-have-recomendations-for-what-batt-to-use/1025/6 "2008-11-19T12:35:53Z")

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… but with fewer options for chargers and balancing when the back does go out of balance…