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Several questions, sorry. 1. is there a way to trickle charge multiple batteries from one trickle charging unit (where a 240v mains supply is available)? 2. is there a way to trickle charge multiple batteries from one trickle charging unit (where there is only access to a solar panel and no mains feed)? 3. in the situations above (1 and 2) does it matter that there is a combination of battery types (wet lead-acid and deep cycle gel batteries)? 4. can anyone recommend a weatherproof solar panel to drive this potential setup? 5. can anyone recommend a trickle charger to run off a solar panel to charge multiple 12v batteries? Batteries currently: 2 x wet lead-acid batteries (50-60 amp hour each); but these could go in time. 2 x gel deep cycle batteries (80 amp hour); very old and again could go in time. 2 x gel deep cycle batteries (110 amp hour); eventually will end up with just these at the observatory. Background: We have an observatory with no mains power. The mount runs at 24v, lighting at 12v. We are looking for solutions to trickle charge the batteries on site, and avoid the need of someone having to lug the 110 amp hour batteries away each time the observatory is used. The smaller batteries are being used as these are easier to carry, but the goal would be to end up with just the two large deep cycle batteries for the mount, and maybe one or two of the other batteries for lighting or to provide a 12v feed to someone who may bring a scope and save them bring power too. We don't want to explore wind power for the time being. Thanks for any replies.
Ok, I hold my hands up, slightly off topic but I discovered a great daytime use for my EQ3 mount and just had to share. Very suited to the job...If your in to solar power I made this vid this week. Explains it better than me typing (about quarter way through). Excuse my waffling about all things 12v http://www.youtube.com/watch?v=5U92h-2HAyw Thanks for watching