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.

Boss, this battery cause it was a lithium battery for my fish. Finder.It worked great the first two days, and by the third day I couldn't get a full day of fishing with it.And I did make sure that it was fully charged before I went out. I kinda expected this from a $30 lithium battery. But I was hoping it would last more than three days. I'm gonna try to use it again.This weekend and see if it was just a mishap.But I ended up having to use my secondary battery for what I consider.My backup battery, just in case if something like this happens while i'm on the ice

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.

Had it for several months now and no issues.

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.