[Rover] 24v/26v

[Greg Mills]

Hi Ev,We have a battery in series, with a box to switch it to parallel to charge.
It has a diode so we don't start the truck off the wrong battery, with 6 awg cables through the firewall. 
The panel between the front seats, if you saw that, has a LED meter on the main battery, and another for 24 Volts. A switch there selects charge or series.
This stuff works fine, but it needs more than a lawnmower battery. It doesn't keep up with the 1296 we get around here. It's a 26 Volt 150 Watt amp from the Ukraine I think.
I like the KFM2R double deep cycle, but wanted to keep it simple. May not have ended up there.
No schematics sorry, but I'll check.
Greg - K2LDT 

Sent from Yahoo Mail on Android 
 
  On Mon, May 4, 2020 at 6:49 AM, Ev Tupis via Rover<rover at mailman.qth.net> wrote:   I'm about to venture into the area of needing 24/26VDC in a 12V vehicle.

Simplicity is desired.

I'm thinking about how to use a 12V battery in series with the vehicle battery to power the 24/26V devices while keeping the 12V devices on 12V (duh).  I'll need ~20A (max) at 24/26V.

Has anyone tried this approach with advice to share?  Maybe even a sketch to show how the two systems coexist?

Ev, W2EV
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