these are the same ones that i have been using. i get them from work, we use a lot of apc ups and i get the old batteries that we are replacing in the ups's.
like mentioned earlier they are used maybe a couple of years, but they are still good. i use it for my fish finder and they last for the whole day. haven't used it more than that but i check the charge when i get back and there is still alot of life in them. i have given some to stinkymatt and ericko and we haven't had any problems.
also the batteries are double sided taped so use a picture frame wire to separate. i also used a battery charger from sears 12v to charge them with. i added a male female connector from west marine that fits right into the sears battery charger connectors.
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