CHINSLiFePO4 Battery 12V 20AH Lithium Battery - Built-in 20A BMS, 2000~5000 Cycles, Perfect for Replacing Most of Backup Power, Fish Finder, Fans, Toys, LED Light, Security Camera, Camping etc.

I've had this in my RV for about a year now, and I am impressed with how it powers everything for so long when "off the grid" One trip, we powered our furnace, microwave, lights, water pump, TV and DVD player, and we went 4 days before the capacity had dropped to 50%. We have a DC-DC charger that runs from the RV alternator, and since it can charge at 40A, we can fairly quickly add a good amount of charge if needed, especially when solar is not available. I can easily carry the battery, and have no complaints about its performance. I disconnected the battery over the late fall, winter, and early spring, and still had 95% capacity on the battery monitor! Excellent storage performance.

I use two of these for powering my 24 volt 75 pound thrust minkota trolling motor on my 21' center console Kenner bay boatVery pleased with the capacity of these batteries.I added a Victron Bluetooth shunt inline to monitor the charge and draw as I use the batteries. I fished 8 hours using the trolling motor on and off all day and still had 98% charge left in the batteries ❤️My old AGM batteries would have been depleated before I finished the day 🫤I would buy again, great value 👍

I have this little battery for a while. I use it to power a desk lamp, that I can use when the power goes out when a hurricane hits. I don't ask much of it and its normally kept charged, so I'm not sure the degradation. I also bought one for my mom's automatic gate opener and it seems to be good.

Message from seller CHINS-US:Dear Customer,Thank you very much for your purchase.The setting method of MPPT and inverter of 12.8V lithium iron phosphate battery pack is as follows:ChargingCharging Limit Voltage: 14.2V-14.4VOver Voltage Disconnect Voltage: 14.6VOver Voltage Reconnect Voltage: 13.8VFloat Charging Voltage: 13.8VDischargingLow Voltage Disconnect Voltage: 11.6VLow Voltage Reconnect Voltage: 12.4VUnder Voltage Warning Voltage: 12.8VThe setting method of MPPT and inverter of 25.6V lithium iron phosphate battery pack is as follows:ChargingCharging Limit Voltage: 28.4VOver Voltage Disconnect Voltage: 29.2VOver Voltage Reconnect Voltage: 27.6VFloat Charging Voltage: 27.6VDischargingLow Voltage Disconnect Voltage: 23.2VLow Voltage Reconnect Voltage: 24.8VUnder Voltage Warning Voltage: 25.6VThe above are two common installation methods, if you use other methods (series or parallel) to install our batteries, please contact us and we will send you the MPPT and inverter setting parameters. We can also arrange engineers to send you design drawings of series and parallel connections.Note: 1, Please avoid short circuit of the battery or battery pack when you connect the battery, otherwise, it will damage the BMS of the battery and make it fail to work normally.2, Please select the specification of the cable connected to the battery according to the current value of charging and discharging, so as to avoid accidents caused by the current exceeding the withstand range of the cable.3, If you don't use inverters and MPPT and don't have any other problems you can ignore this email.Best wishes.

My husband has a commercial fishing license and flounders on our coast almost every night. It’s his favorite hobby. We got these batteries to see how much longer they would last vs his other ones and these are great. One battery will hold for several hours to get him through most of the night. We wound up buying a 2nd one.

These are great.I replaced two Interstate lead-acid deep cycle batteries (SRM-27's), and can't believe how much better (and longer) the Minnkota Ulterra functions with these LifePO4 batteries!First, as mentioned I use two of these 12v batteries wired in series to power the 24v Ulterra trolling motor that is mounted on a Carolina Skiff 23UE's bow.The batteries are charged with a Noco GENPRO10X4 12V 4-Bank, 40-Amp On-Board Battery Charger, which allows me to individually select the type of battery for each of the four batteries on the boat to Lead/Acid, Gel, AGM, or Lithium. Obviously, the two CHINS 100AH LifePo4's are set to "Lithium." They needed to be charged upon receipt of the batteries, and I let them charger overnight. No problem.The Ulterra is very sensitive to voltage. Regular Lead and sealed (agm) batteries drop voltage as you use them, causing problems where the Ulterra stops functioning, except at very low speeds. After experiencing many error codes on the Ulterra after an hour or less of use ( if running more than speed 5 (of 10)), I called Minnkota who said, "the Ulterra needs the batteries to have voltage of 12.6v per battery under a load for a combined reading 25.2v total," or it will turn off, as I was experiencing.My multimeter showed that the voltage of the two Interstates (only about 3 months old) was dropping well beneath the 25.2 threshold almost all the time at load -- dropping beneath the 25.2 that Minn Kota wants to 24.6v at speed 5 of 10.To better check and understand and track, I installed a Victron BMV-712 ( https://www.amazon.com/Victron-Energy-MONITOR-VTBMV-S-BMV-712-Battery/dp/B075RTSTKS/ref=sr_1_5?crid=2LK4SOA30P2XT&keywords=Victron%2B712&qid=1650131508&sprefix=victron%2B712%2Caps%2C94&sr=8-5&th=1 ). It confirmed my multimeter readings but allowed more much more detailed tracking. The lead batteries were not maintaining sufficient voltage output. When brand new, they worked better. Likely, I ran them below the 50% charge level a few times without knowing it, and might have damaged them.That's another benefit you'll read about LifePO4's over traditional deep cycle batteries. The lead flavors are not supposed to be run beyond 50% of their rated capacity, so you should only use 44AH of an 88AH battery, or it can be damaged. The LifePO4's can go low. I've taken these to 20% without any problems, and have heard of others going to 10%. Getting them to 20% was a long day of running the trolling motor.The voltage on the two LiFePO4's (in Series) stays in the range of 26.9 to 26.0v under load when operating between Ulterra speeds 1 to 7.5 of 10. It drops into the 25's at speed 8 to 10, but never drops below 25.4, which was at speed 10 with about 50% of the AH's consumed already. Excellent!!These batteries are great!! Strongly recommend for the Ulterra 24V and imagine they would also be great for the 36V Ulterra if you buy three of them. Remember to buy, have, or install a proper lithium battery charger for these, too.One word of caution, I try to avoid running the Ulterra at the high speeds 7.5 or higher for long periods of time (30 minutes) with the LiFePO4's because Minn Kota's website mentioned that the motors were designed with Lead Acid durations in mind, not the much longer durations without voltage drops that we can get from the lithium batteries. Also, the Victron has an alarm that notifies me when the only 15% of the battery capacity remains. Lithium batteries hold their voltage very well until the end, then really, really drop. I'm concerned there would not be sufficient voltage to Stow the Ulterra if I ran it to the end of capacity.