WEIZE 12V 100Ah Mini LiFePO4 Battery, Built-in 100A Smart BMS, Deep Cycle Lithium Iron Phosphate Battery Perfect for RV, Solar, Marine, Trolling Motor, Off Grid Applications, Backup Sump Pump

Game changer, the life on this when running a trolling motor is exponentially better than a lead acid. You won't regret it just buy it. But make sure you get a proper charger. The battery size is small the power is mighty

Used this battery strictly for a small trolling motor on kayak. Never discharged fully, used lithium charger, kept it topped off in off season, and only used maybe a couple dozen times. Battery stopped accepting charge after 11 months. After some troubleshooting and back and forth with customer service, a replacement was sent to me. Not super impressed with the life span of my first one, but the customer service made up for it. I will update after another year with the new one.

I was skeptical when I bought this battery but I had read a lot of reviews and everyone seemed to like it. I charged it fully and took it out 4 times so far. This last weekend I hooked it up to my 9” FS and active target at 730 in the morning. Had the screen on and the transducer off unless I was using it. Used the AT for about 3 hours total and had the screen on for about 8 hours. Took it out of my boat and went to put it on the charger and it said it was full!! Checked with a meter and it was at 13.6v still!!! Unbelievable. When my lead acid trolling motor batteries take a crap I’ll get 2 more of these. The ONLY problem I have with the battery is that if you are using smaller washer style connections the terminal bolts won’t close all the way. They are made for the bigger battery type connectors you would use in a trolling motor. Ran to ACE hardware and got some 3/4” bolts and a couple washers for 2$ and it’s good to go.

Under product detail pictures, the listing clearly shows wireless connectivity using a downloaded phone app. However the battery never had the feature as confirmed directly with Weize. They are not willing to correct the error and deny the listing was incorrect. No offer to send the correct product or an offer any kind of credit. Therefore, I would dout Weize would honor their warranty if they won't even admit either the listing was wrong or the wrong product was sent out.

Came fully charged, and stays charged for hours on my 62lb Newport Trolling motor. Charges super fast and stays charged for days. Great for the price, and super lightweight.

I read for about 2 months online about adding a lithium battery in parallel with lead acid batteries and a lot of websites said don’t do it. I found a site about sailboats on the ocean using them and the guy had been doing it for a few years to add longevity to his LA batteries. I decided to try and added this to my RV with two 85 AH LA batteries about three months ago and couldn’t be happier. We like to boondock a lot and the LA batteries just couldn’t handle the fridge which runs on the solar and was draining our batteries after about 6 hours with full sun. I added this battery on the backside of the other two to work as a equalizer to keep the others charged while working hard. It has worked beautifully. We have boondocked a few times since then and the lowest our batteries have got is 12.3V. I used to start the generator at night also and have not had to do that. I have consistently tested these batteries since there was so much negative feedback about running them with LA batteries and they have been consistent at 13.5-13.8v. I know lithium is made to charge higher but everything I have read says keep them at 50-80% which is inline with what LA batteries stay at when charged by your RV. I guess I will see how the winter goes but this has been a great addition and has done exactly what I wanted it to do.

Upon charging these batteries for the upcoming fishing season both 100aH batteries would not accept or hold a charge. I thought it was my Minnkota digital 3 bank charger (which worked without issues in the past) so I purchased a new NOCO 3 bank 10A charger. I selected to "Lithium" and within 1 minute the charging cycle said it was complete. My volt meter read 12.92v on both batteries or approx. 50% SOC yet they would not accept more than that. I proceeded to email "[email protected]" with pictures and descriptions of my issues of what was going on, 5 days later I still didn't have a response so I called the phone number listed on their "support" webpage and got forwarded to an answering machine so I left a voicemail. I did not hear back from my attempts so far, then I emailed again asking if they received my original email. No response what so ever from all my attempts. The product may be good, affordable and they claim a 10 year warranty. With no customer service or technical support what good is the product if you have issues?

Very good battery came charged. I’ve used it for over 2 years and have never had a problem with it. Easy to install. It’s a great battery for campers or off-grid enthusiasts