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 <[email protected]> wrote: From: mac Lewis <[email protected]> Subject: [RE-wrenches] unique battery bank design question To: [email protected] 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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