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Old 05-17-2017, 10:41 AM
Cat966c Cat966c is offline
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Default Battery questions

Hi all! Been away for awhile. Anywho, I'm at the battery stage of my project and I need help (surprise). So I'm running a 12 volt rated pump and was thinking of getting an 11.1 volt battery, but the dimensions of it are too big. So I was wondering if I can use a 7.4 volt and still get decent power from the pump?
The pump is rated at 150psi at 12 volts.
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Old 05-17-2017, 11:20 AM
Rimrock Rimrock is offline
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Default Re: Battery questions

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Originally Posted by Cat966c View Post
Hi all! Been away for awhile. Anywho, I'm at the battery stage of my project and I need help (surprise). So I'm running a 12 volt rated pump and was thinking of getting an 11.1 volt battery, but the dimensions of it are too big. So I was wondering if I can use a 7.4 volt and still get decent power from the pump?
The pump is rated at 150psi at 12 volts.
150 psi at 12V is a low rating initially. E.g in a excavator 300-400 psi is used to get a decent power. On a dozer it's more a matter of moving the dead weight of the blade and so on, so not as critical with the pressure as an excavator. you might get things moving at 7.4V, but not have to big hope of things moving fast) but it's no problem to give it a try, if you already got a 2S battery at hand.
There are lots of different sizes lipo 3s batteries out there, e.g ebay, would advice you to search for a suitable one.
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Old 05-18-2017, 11:36 AM
Cat966c Cat966c is offline
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Default Re: Battery questions

How about if it was an 11.1 volt battery? I've found one on eBay that's pretty compact
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Old 05-18-2017, 12:01 PM
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Northern Farmer Northern Farmer is offline
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Default Re: Battery questions

Traxxas 11.1 1400mah lipo is fairly small.

https://www.amazon.com/Traxxas-Batte...s+1400+battery
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Old 05-18-2017, 05:07 PM
Rimrock Rimrock is offline
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Default Re: Battery questions

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Originally Posted by Cat966c View Post
How about if it was an 11.1 volt battery? I've found one on eBay that's pretty compact
That's the one to go for, that is the LiPo batteries with 3 cells, named '3S', mostly used these days for 12V setups. They are about 12.5 V fully charged, and one will typically recharge them when they have dropped to about 11.1V. A charger that is prepared for LiPo batteries is needed. And LiPo voltage alarm is needed, to hook up to the battery. If dropping the voltage bellow about 11V regulary, the lifetime of the battery will be relatively much reduced.
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Last edited by Rimrock; 05-18-2017 at 05:10 PM.
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Old 05-21-2017, 10:15 PM
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trucker1970 trucker1970 is offline
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Default Re: Battery questions

I just bought a 10 cell 12v 2500mAh as a second battery and although it came in the wrong shape because I didn't see anything other than FLAT as an option I was able to get it to the configuration I needed and made it fit. It was $82.50 delivered... no clue if that's a good price I had a hard time finding one.
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Old 05-21-2017, 11:58 PM
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Default Re: Battery questions

http://exceltruck-shop.fr/epages/3d8...bjectID=231242
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