My fishfinder batteries, the big 7A ones Humminbird sells, have been lasting, at most, 2 hours lately, sometimes less. I've been wondering why, and have gone back and forth with Humminbird to no avail. I have 2 of these batteries, one of which is relatively new, and both provide no more than 2 hours of usage, so I thought perhaps the FF unit was defective in some way. Humminbird disagreed and said my batteries were probably defective, and I told them "no way, brand new battery, good charger, blah blah blah". So I ordered a new battery to stick it to 'em and say "look Humminbird, this battery is brand new and still it only lasts 2 hours, you see I told you so...".
So I got my new battery today, charged it up and hooked it up. The fishfinder stayed on for 5 hours before I eventually turned it off. Clearly, the FF is fine, and it IS my batteries that are faulty. Doh!
So now I'm wondering why.
On the side of the battery, there's a sticker that says, among other things, Do not charge under airtight conditions.
My 2 other batteries are sealed in drybags, which is close to an "airtight condition", and I do charge them in the bags. Could this be what is causing my problem??
So I got my new battery today, charged it up and hooked it up. The fishfinder stayed on for 5 hours before I eventually turned it off. Clearly, the FF is fine, and it IS my batteries that are faulty. Doh!
So now I'm wondering why.
On the side of the battery, there's a sticker that says, among other things, Do not charge under airtight conditions.
My 2 other batteries are sealed in drybags, which is close to an "airtight condition", and I do charge them in the bags. Could this be what is causing my problem??
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