ECO-WORTHY 12V 280Ah 2 Pack LiFePO4 Lithium Battery with Bluetooth, Low Temp Protection, Built-in 200A BMS, 3584Wh Energy. Perfect for Off-Grid, RV, Solar System, Camper, Travel Trailer, Backup System

Ran 4 12's in series and parallel for 24vt inverter, batteries hold voltage well, work awesome.

Simply amazing, wish I would have bought these batteries in the beginning instead of the 100 amphr batteries from Haya. Last a long long time, connect to your phone blue tooth so you can monitor battery capacity and charging status. 4 pack a great buy, will purchase more for future off grid solar projects.

This pair of 280AH LiFePo4 battery works great, if my meter is any good, it registered 290AH.Like other 12v LiFePo4 batteries, they all list 14.6V as charging voltage. They may work well in standalone charger with 14.4v for boost, float and equalization voltage, those voltages are not for off grid system that are active 24/7. The BMS in this battery and one of my other brand battery will disconnect the battery from the system momentarily when the charge controller voltage reaches 14.2v, then reconnects to see if the voltage is below 14.2v and stays on if it is, repeating this process continuously until something breaks or break the cycle. This is fine in a standalone charge system, but in the off grid system charge controller will output overvoltage when the battery disconnects, causing the power inverter to shut power to your appliances and power back on when the battery reconnects, like flipping the power switch on/off to all your appliances every few seconds continuous until the solar power output is below the appliances power load. Power spiking to your appliances is harming and eventually burn them out.Fortunately my Renogy 100A charge controller has a user define setting for battery type, which allows me to set the voltages to 14.1v just below the threshold for the BMS to disconnect the battery, avoiding power spiking in my 24/7 off grid system. The 14.1v settings is just my trial and error setting to get the around the BMS overvoltage protection issue, I wish ECO-Worthy tells us what the user define boost/float/equalization voltage setting should be for off grid system running 24/7 and still get the most storage capacity from the battery.My old green label battery brand starts with letter J works with standard 12v LiFePo4 battery setting without power spiking in my fully charged (14.4v) off grid system running 24/7 for a year without any issues, but they have been awfully quiet for me to make any further upgrade investment

I have bought 12 of these batteries so far. All are working just fine. Had some technical issues with the newest batteries that included blue tooth monitoring. It took about a week of correspondence with the company to resolve some minor issue with recharging and having the blue tooth saying the batteries were fully chargedSome technical person named Dante helped me through resolving the miss steps. The quality of his service and keep checking back to see things were getting resolved deserves a A++ gradeI will continue to buy and promote their products because of his efforts high five for helping me you are the best!

Well, I'm going to keep this as short as possible. I bought the 2 piece 280ah batteries here on Amazon. It was a great price for this capacity battery for my RV. One battery arrived in perfect condition, and the other arrived with no labels at all. I called Eco-worth and expressed my concern with receiving a battery with no labels. They literally told me to "try them and see how they do." Seriously?!!! What if my RV burns down because of mismatched batteries? They offered to do an exchange, but I had to ship their battery back on my dime, and provide proof of shipment before they would ship me a replacement. Needless to say, I'm processing a return through Amazon to send both batteries back. I really wanted these to work for me, but I'm not ok with an unlabeled battery. If this is an indication of their quality control, I'm happy to pay more for a better product.

These were shipped out quickly and in very heavy duty boxes with form fitted padding. I have now run these outside in my garage through two major power outages 3 days with a few lights and portable AC only took the batteries down to 42% They run daily as primary power for my servers, desks and lab. usually only losing about 10% over night and get plugged into 800W of panels and charge them back to 90% when they get close to 60% They have been proven to stand up to use, but more time is the real tale for batteries batteries.

They work flawlessly but with a bank of 4 in parallel they come up around 100 ah short of the specified capacity but still cheap per kwh and well worth it

I am a real buyer of these batteries. I use them with solar panels, inverter and power a portion on my house with them. I had T-105 lead acid battery bank. Welcome to the Future !!! The customer service is excellent if you have questions. Not only do I recommend these batteries and this company, I just purchased 2 more of them for a total of 4...