TEMGO 12V 300Ah Self-Heating LiFePO4 Lithium Battery with Smart Touch Screen & Bluetooth App, Built-in 200A BMS, 2560W Power, 5000+ Cycles, for RV, Camper, Solar, Off-Grid

A true powerhouse of a battery!After replacing the standard batteries in my travel trailer twice in 4 years, I decided that my next battery purchase would be LifePo4 due to their resilience and durability. The question then became, which one to buy and what capacity. I research this sort of purchase carefully and watched a lot of YT videos before settling on the TEMGOT 300AH.The biggest challenge was making the battery fit. I have a towable travel trailer so the battery lives out on the hitch behind the propane tanks. After careful measurements, I determined that the battery would fit inside of a standard 4D battery box. To say that it’s a tight fit is very accurate, but it did fit after a little wrangling and relocating a few connections like fuses and electrical. The real advantage to shoe-horning something like this into such a limited space is the light weight! This battery is only 57lbs so it’s very easy to move and do test fitting. I’d measured several times before purchasing the battery and battery box and while it was tight, overall the install went very smoothly.Now for the real benefit to this battery install: the power! Once connected, everything worked as expected. It could be just my imagination, but all of the slides seemed to go in and out quicker and quieter. I charged the battery ahead of time as it arrived at 57% charged, so I wanted to see what the 300AH capacity really provides from a capacity standpoint. I don’t have an inverter (yet) but I turned on every single 12v power consuming thing I could think of. All of the lights, fans, refrigerator etc. Everything possible. I rolled the slides in and out multiple times. Anything to put a load on this battery just to see how long it would take to drain it. I let all of these run for over 6 hours and the display showed the battery still at 80%. The AGM batteries never seemed to take this sort of “abuse” very well, but the TEMGOT handled the load easily.All of the reviews on YT were extremely positive. I watched a tear down video where the reviewer put the battery through a torture test with a number of digital meters connected to verify that the advertised 300AH was achievable, and their specific battery actually exceeded that rating. The build quality appeared to be very good.This battery does have a built in LED display to show status of the charge, as well as cell balance, estimated runtime, etc. I downloaded the BMS app and just use that to not only track battery status but I can also completely shut down the battery using just the app. A handy feature, I think.This battery is also self heating so if you attempt to charge it in colder conditions, it will use the incoming power from the charger to energize the heating pads built into the battery. This is contingent on the connected charger is providing 10A or higher charging amperage.I highly recommend the TEMGOT 300AH Lifepo4 battery. When I compared the cost of replacing the AGM batteries and calculated the weight savings and increased runtime, the numbers literally added up. There are some incidental costs involved with switching to LifePo4 from led-acid or AGM, but the benefits make these worth the time and money.

I removed the lead acid battery and connected this LiFePO4 battery into my travel trailer. In order to get it to charge fully, I also had to change out the WF-8735P to a WF-8740AD converter (converts incoming AC power to DC power to store in the battery). Just a side note: the WF-8740AD, which is advertised to auto detect the type of battery it's connected to, did not automatically switch over to LiFePO4 charging mode. I had to call the company (WFCO) and convince them to send me a "jumper" that plugs into their unit to get it to switch over to LiFePO4 charging mode. Of course, the company that makes the defective converter is not the company that makes this battery. The battery itself has performed very well so far, charging the trailer's fridge, lights, fan, and water pump. I get about two days worth of off-grid trailer power now, compared to only one day with the old lead acid battery. Another feature I like about this battery is its LED view screen. Now I can easily check the battery voltage, percent of charge, incoming current, outgoing current, and even the state of each of the four battery cells. Very convenient! I can't speak about the battery's self heating feature, because we haven't had anywhere near freezing weather here. Hopefully that will activate if I go somewhere cold. Overall, I'm pleased with this battery, and the price was right for a self-heating, LiFePO4 battery.

This battery is a MONSTER. This thing is super nice and all luxury when it comes to Lithium batteries. Has a display that gives all the information you need as well as an app to connect. The case is METAL folks.. unheard of. This one has a built in heater also that will come in handy in the winter months. Very satisifed so far. Great Battery.

My first ever lithium battery, it’s a group 31 size but when I ordered it I thought I was getting the group 24 size which is ok by me, it’s a little bigger than I wanted but made due by getting another battery tray. Functional for what I need it for (Humminbird graphs) I charged it fully and have been out numerous times, I’m guessing 7 times now, 6-7 hours each time and the battery is still about 50%. I like how it’s Bluetooth, has its own LCD display built right into the top of the battery which allows me to view the information of battery life, charge remaining, hours till fully charged, individual cell voltage etc. Charges just fine with my NOCO 10a 4 bank charger. I especially like the weight less than 30lbs.

Powerhouse Battery — Worth Every PennyThis thing is a beast. I’ve been using it to power my setup for gold prospecting trips, and it runs my 4700 GPH bilge pump all day with no problem. Holds a charge like a champ, and I’ve been impressed with how consistent the output is.The build feels solid, terminals are clean, and the display is a nice touch for keeping an eye on things. If you need serious power that won’t let you down in the field, this battery delivers.

I was so pleased with the first one, I bought a second. I use it to store extra energy when my power stations are full. The idle consumption using a small 300W inverter is truly amazing and it ran beyond even when it showed 0% capacity. I can easily use it to charge my smaller power stations when there is no sun. It operates with solid consistency. I love the lug nuts on top as they easily fasten with a phillips screwdriver and the bolt and washers are one unit that do not drop off when the bolt is removed. The display is wonderful to gauge all aspects of battery performance. I appreciate how light weight it is.