12V 10Ah Lithium LiFePO4 Deep Cycle Battery, 3000+ Cycle Rechargeable Lithium Iron Phosphate Battery for Solar, Fish Finder, Power Wheels, Lighting, Off-Grid Applications with 10A BMS

I have owned 2 of these to use in an old fish finder for ice fishing. They cut the weight in half and last for days on the ice. I have the other one away, but then decided I needed another one. Far superior to lead. I used this with my flasher for a 3 day ice fishing trip and did not have to recharge even once. It also seems less affected by the cold when fishing outside then the old lead one did.

Had it for several months now and no issues.

Used this battery for fishing using 1 underwater light. Worked for 6+ hrs without dimming. Second time I used 2 lights off the same battery and only used for about 4 hrs. Still had plenty of juice left.

The rated 10Ah capacity is delivered. I am able to verify the battery capacity by a battery capacity tester. Mine is actually 10.4Ah at 3.5 A load current. The BMS over charge and over discharge protection also pass the test. The longevity is unknown. Time will tell.

Some LiFePO4 batteries are extra lightweight so you know the cells inside are cheap. Some of them won't even power my small ham radio equipment without shutting down. This one works well and powers my small repeater/solar setup.