Could you minimise the unbalance by switching the load between the two batteries at a very low frequency, maybe a mHz? On 28 July 2015 at 05:58, Denny Esterline wrote: > I tend to look at stuff like this as a risk/reward balance. > The reward side is easy enough, you avoid a few $100 worth of parts and > their install. > The risk side is a little trickier... > What are you going to do to rebalance the batteries? > How much will this shorten battery life? (highly depends on what you do t= o > rebalance them) > What happens when someone else has to service the system? (there's a > scenario when you disconnect one battery, your equipment could see revers= ed > polarity) > > For _me_, I'd do it without a second thought. For something a customer wa= s > paying for or something my wife has to use if I'm not around - not a > chance, > > FYI, a wee bit of googling found this > http://www.powerstream.com/dcdc-24V.htm > Might be some options there. > > > -Denny > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 __________________________________________ David C Brown 43 Bings Road Whaley Bridge High Peak Phone: 01663 733236 Derbyshire eMail: dcb.home@gmail.com SK23 7ND web: www.bings-knowle.co.uk/dcb --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .