ECO-WORTHY 260AH 12V Lithium Iron Phosphate Fast Charging Battery, 6000+ Deep Cycles, Built-in BMS, 3328Wh Energy, for Solar Off-Grid Power System, RV, Home Backup, UPS and Marine, BCI Group 8D

The battery that I received measured nearly 0 V across the battery terminals, even after fully charging with an Eco-Worthy 20 A LiFePO4 charger. I contacted Exo-Worthy customer service and they responded the next day with some instructions for evaluating the battery, and upon completing the evaluation they determined that the battery was defective and immediately shipped a replacement free of charge. The replacement battery worked perfectly and has met all of my expectations.Eco-Worthy asked if I’d be willing to conduct a tear down of the original defective battery, to help determine the cause of the problem so that they could use the information to improve their product. I agreed, and upon opening the battery case and removing the cell pack I discovered that the BMS cable had been routed in a manner that resulted in it being pinched between a steel bracket and the side of the battery box, which ultimately cut one of the 5 wires. I reported the findings to Eco-Worthy and they immediately shipped me a new BMS cable, again free of charge, so that I had the opportunity to repair it if I would like to do so. I did and the battery now works flawlessly. The customer support team at Eco-Worthy was outstanding, and despite initial disappointment with the defective unit I would not hesitate to buy another Eco-Worthy product considering the phenomenal customer support that they demonstrated.Repairing the first battery also provided me the opportunity to evaluate the design and construction of the internal components, and I was very impressed with what I saw! The four battery cells were all secured together in a custom designed, powder coated steel cage, neatly secured together and protected with a dense foam product on all sides. The BMS was a JBD (Jiabaida) brand; a high quality, respected and well known BMS manufacturer. The BMS was securely mounted to the cage structure, complete with an aluminum heat sink and plenty of air space surrounding it. The BMS cable was a customer harness, wrapped in cable cloth and each wire was cut to match the distance to the corresponding cell terminal. Ring terminals were crimped to each wire end and heat shrink protected the connection. The 5 pin end of the harness at the BMS included a dab of sealant to ensure it remained connected. The cell connections were all secure, with the final positive and negative terminals in the series secured with a nut that included some sort of thread lock material. Lastly, the positive and negative wires were 6 gage silicone cable, and were routed in such a way to ensure that the positive and negative could never come into contact or abrade against each other to short the battery. All in all, the quality of the internal construction and the quality of the components used were very impressive. I’m very pleased that I purchased this Eco-Worthy battery.

I have spent about 2 years (not months) trying to find a drop in solution for my RV to run my electronics (2tvs, lights, residential refrigerator, sound bar, phone chargers etc..) I wanted around 300ah single 12v lithium that I could mount under the stairwell where my current 12v lead acid battery are. I couldn't justify spending $1,000 or much more. I have a 2000w pure sine wave inverter.(4,000max) This battery not only lasts 48 hrs + but now my inverter is much stronger and can run microwave at the same time and/or space heaters. On top of that, I didn't spend anywhere near $1,000 ( more like 1/2 that cost) and I'm good for the next 10 years. I had a price concern and these guys matched a president days sale price from a competitor. The 280ah battery showed up in a few days, fit perfect, and I am over the moon happy! The only thing you need to do( this is important) is either replace to your onboard battery charger or make sure it's lithium compatible and make sure it can charge the battery up to 14.6 volts. Typical RV chargers on 2018 or older don't charge to 14.6 volts(only 13.6volts normally) not only can you damage your new lithium battery but at 13.6 volts the lithium battery is around 30%soc at 13.6 volts. To summarize, I replaced 2 (100ah) lead acid batterys with 1 (280ah) lithium battery. This unit is drop in ready, about 5 times the reserve capacity(remember lithium can be discharged close to 0% vs. about 50% on leas acid) has built in 150amp max discharge bms, and has great customer support for around $500. If you've been waiting like I have to make the upgrade do yourself and everyone around you a favor and buy this battery now! You'll thank me later!

This battery is a five star battery, charged up and starting working, no problem. The bluetooth app is amazing and better than many shunts. I am impressed beyond words.