WEIZE 12V 50Ah Trolling Motor LiFePO4 Lithium Battery, 8000+ Deep Cycles, Built in BMS Group 24 Battery for Power Wheelchair, RV, Solar, Marine, Boat, Home Energy Storage, Backup Sump Pump

I’ll update this once I get to use it.I bought a 100ah made by the same company and received it today. It’s topping off on the charger now.These batteries seem to be the best for the money and top seller on Amazon. 10 year warranty as well.By upgrading with these two batteries I have removed 70lbs. From my boat.UPDATE: Was supposed to put them to work today but had problems with my boat.Thought I would go ahead and add another star. The 50ah arrived yesterday days earlier than expected.Also the company read the first review and thought I was unhappy and contacted me immediately to solve any issues.I have never had a company that eager to fix a problem.I would recommend buying from them and haven’t used the batteries yet.Hopefully I’ll get repairs made and can put them to the test in two days.Then I’ll be back to give them the final star.It’s 3:00am and I’ve had my boat on the water for hours. I used every light I had including spot lights and big green under water light. And recharged our head lamps. Just took a voltage reading. 13.1 volts. I had it on a good smart charger last time I charged it and it’s holding strong. Finally a battery that fits where I need it to and runs all the electrical on the boat and I don’t have to worry if I’m using it to much Incase I need my bilge pump to go to work. Now I feel safe.

For many years at work, we used conventional lead acid batteries for lighting, which did not work all that well. A few years ago we switched to automotive deep cycle AGM's, which did work much better, but they have gotten very expensive lately. Now, Lithium batteries have become much more reasonable, and should perform much better in this type of service. Additionally, the built in BMS should provide protection from over use and/or lack of appropriate charging, which occurs far too often. Only downside is the need for a specific Lithium battery charger, but they have become inexpensive and readily available.

I received the 50Ah battery in short order. Shipped from CA. I know I know its a bump address for china but still. Undamaged and at 45% charge. I connected a proper LiPo4 charger and walked away. (ie low amps).Tested the next day at 14.4 100%I am now using it for QRP with a FT-817 ND and a 50w amp.For testing of the battery.I ave been able to operate my PORTA ham shack with a Xiegu G-90 and 100w amp and a President Lincoln II plus 10-12 meter. Windows laptop for digital connection of the G-90 and screen interface. FT8 was flawless.I transmitted for 40 minutes off and on and on standby (receive only).The battery was still at 62%I used a FAT .50 cal ammo can and it fits like a glove. I used a 50amp reset-able breaker so it will trip open (shut off) the power when I close the lid.73

Bought this battery less than a year ago and it’s stopped charging. I use a Noco lithium charger and it still charges my other lithium batteries. Battery throws a fault and won’t charge now. I reached out to the manufacturer without any reply. Looks like I’m out a battery! If you’re looking at this battery, I’d move on the the next one from a different manufacturer.

Received the battery in march of this year. Everything seemed great with the battery the first couple times I used it. Now I’m getting an error message and will not take a charge. Sent a request to the company for a replacement. Hopefully they take care of the situation and I’ll come back and update the review.Update 8/2/24 - contacted the company and to this point they have been very responsive. Appears I have a defective battery, they are sending a replacement.Update 8/7/24 - received the replacement today, I appreciate how responsive the company was to my issue. I’m going to raise my star rating because of that. Hopefully everything works well moving forward.

I have pumped close to 200 gallons of diesel and haven’t had to recharge the battery. It’s been working fine even in the cold weather. I love the convenience of not using alligator clips to run my pump off of a vehicle. The tank is so much more user friendly with having an on board battery.

I use this to power a small trolling motor. Previously I had a 100ah, 60 pound AGM lead battery that I left on the boat all the time with a solar charger. This is so lightweight I just take inside occasionally for charging. I don't know how long it will power my trolling motor because I've never run it down enough to tell. I can use it all weekend and my small charger is still able to top it off in a couple hours.

Not going with one star because Amazon customer service was really helpful and refunded the purchasse price right away with no problems. I think the battery was at the warehouse too long and it was just the one I got.I put the charger on it and left it 6 hours with no change or charge. It was a charger meant for that specific type of lithium battery and had worked on other batteries so I am sure it was not the problem.WEIZE also responded in a timely manner, so I can't say I am disappointed with them. I just got a battery that had been sitting awhile and lost the charge to the point it was not recoverable.