[RE-wrenches] unique battery bank design question

[Exeltech]

Mac,

Don't tap the battery.  Bad idea.  Uneven loading = unequal charge/discharge, which leads to shortened battery life and other troubles.

Better idea:  If you know the maximum load current, use high-efficiency DC-DC supplies of adequate current and other ratings to step 48V down to 12 or 24V.


Dan
Sr. Engineer
Exeltech


--- On Thu, 9/1/11, mac Lewis <maclewis1 at gmail.com> wrote:

From: mac Lewis <maclewis1 at gmail.com>
Subject: [RE-wrenches] unique battery bank design question
To: RE-wrenches at lists.re-wrenches.org
Date: Thursday, September 1, 2011, 2:52 PM

Hello wrenches,
I have a battery bank questions.  I have an Oil & Gas client interested in setting up an off-grid control system that has a various DC loads at 12VDC, 24 VDC and 48 VDC.  My thought is to build a 48 V battery bank and tap off the bank at various points to create a 12V bus, 24V bus and 48V bus.  I am a bit concerned about unequal loading of the batteries.  Has anyone dealt with something like this that would like to share some insight?

Thanks

-- 


Mac Lewis
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