i use a walmart charger. i bought the 35 amp 'smart' charger that gradually reduces the rate as the battery comes up. think i paid about 60 or 70 dollars for it. been using it for nearly two years now. here's my take -
we had intended to install solar panels
charger to supplement the engine
. at anchor
, where cruisers spend a lot of time, i dislike running the engine
to charge the batteries. but we ran out of time (and money) so i bought one of those chargers to run off my little honda
eu-1000 gas generator
my battery bank consists of four trojan t-105 golf cart batteries for the house bank and one trojan 12 volt battery for engine starting, combined total of about 550 amp hours. but i only use the house bank most of the time so call it 450 amp hours. in a typical 24 hour day we use 60 to 80 amp hours - most of it for the adler barbour fridge. each morning i check the battery voltage to see how much needs to be replaced and then run the charger off the honda
- takes two or three hours and costs about a quart of gas. it's not as convenient as being able to just push a few buttons because i've got to open up the battery box
and set up the generator
in the charger and connect the cables
to the battery posts and all that but so far i'm willing to accept the inconvenience - not everyone's cup of tea.
i'm still going to install solar panels
someday. should cut down on the number of times/hours i have to run the honda.
and yes, i do have an onboard charger that i can use at dockside but it's only rated at 10 amps.