48V 100Ah LiFePO4 Lithium Battery,8000+ Deep Cycle Golf Cart Battery 48V, 100A BMS 5120W,4 Group 12V 100Ah in Series to 48V 100Ah Lithium Batteries for Marine Boat,Trolling Motor,RV

Bought them for my kids new golf cart for Christmas. All four batteries were easy to install. Great for the first 2 months(winter) so maybe drove 10 miles a week. Batteries are no longer charging to full capacity. All four test 13.7dcv with a brand new lithium charger bought specifically for these types of batteries. I’ve contacted the seller. So far no response back.Update:2/28/25- manufacture reached out the very next day. Sent information on how to reset the batteries plus a video. Super helpful, 5 star customer service. Even though I have issues to address. I would still recommend this battery and manufacturer!! Thanks Amazon, thanks for making your customers feel cared for. Like our purchase really can be backed by reputable suppliers

Batterys alot lighter and cart moves much faster. Would buy again. Stays charged longer also.

These batteries are super light and last a very long time! I lost 100 pounds in old battery weight and now my cart is way faster and stronger!!worth every penny and easy install!!!

Good product

These batteries weigh a fraction of the lead-acid version, but provide much more power with a flatter discharge curve. I installed these in my Ryobi 48" lawnmower and it's better than new.Important notes:1. Fully charge each battery individually before using them. They recommend an initial charging voltage between 5v - 10v. It took me about 6 hours per battery, @ 5v, to fully charge them.2. Connect all 4 batteries in parallel and leave them to balance for 24 hours.3. Once they are balanced, you can connect them in series in your Ryobi mower.4. I plan on adding a battery balancer to ensure even charging/discharging across all 4 batteries.My lead-acid batteries had deteriorated to the point that I had to charge 3 times to cut ~1.8 acres. After making the conversion, I cut everything in one shot and only used ~ 35% of the new capacity.

Made my golf cart perform better than before!

These four batteries are less than two months since purchase (Jan, 28, 2025 rcvd). Their Voltage has NEVER exceeded 12.9 volts.This was my third purchase of four and second purchase from this supplier. Previous purchases ALL exceeded 14VDC so I feel these four were “culls” that didn’t meet the “Standard”.Why? If, one battery fails that is forgivable.ALL FOUR FAIL?!THAT IS MALICIOUS MARKETING!

Purchased for my personal golf cart and a community golf cart. The charge last for days and they’re a great replacement for standard batteries