12.8V LiFePO4 Battery 100Ah Lithium Battery with 100A BMS Group 31, 10 Years Lifespan, 12V Solar Deep Cycle Battery with Charger for Winter Power Storage, Trolling Motor, Off-grid, Boat, RV

Update 1/9/22Batteries are super stars. Been boondocking for months on these and our Solar with great success. Running 400ah @24v and zero issues. Getting advertised amp hours and running smoothly.Update: 9/26/21Still very happy with these batteries. Traveled through national parks burning tons of amps with these running out air conditioner, PlayStation 5, computers every single night and have been very happy with the performance.Would purchase again.I'm converting a Ford Transit and wanted a really nice off the grid solar system that could realistically run the air conditioner on battery over night in warm climates. I shopped hard. Looked at everything from Bigbattery, SOK, battleborn, Chins etc. I spent a ton of time in DIY solar forum, youtube etc watching reviews and trying to figure out if I wanted to take the chance or not. I knew I could fall back on Amazon or even a charge back if it came to it so I went ahead and took the chance.I ordered 3 200 amp hour 24 volt batteries on 2/13/21 and they arrived well packaged and in new condition at my home on March 16th (early).There was an issue with one of the batteries being the wrong size (Shipping issue). I contacted the seller via email and they quickly rectified the problem and I am 100% satisfied with the outcome and their response. The seller has been easy to get in touch with, my emails have been returned promptly and they have bent over backwards to ensure that I was taken care of and never once asked me to sacrifice anything what so ever.Any company can sell you a product. The real question is will these people take care of you when there is a problem and I can say that I would 100% buy another battery from this company again. End of story. No BS. I spent a lot of money on these batteries and I would gladly buy them again.Ok, now to the performance. I used the included chargers to top off both batteries and ensure they were both fully charged separately. I let the batteries sit for a day after being fully charged and the voltages were identical on both for the duration of the charging and post disconnection. After connecting them to my inverter and wiring everything I ran my air conditioner, 48-52 amps @ 24v until my inverter disconnected the load at a conservative >10% thresh hold.I got 365 aH out of the bank with an ending voltage of 25.01 volts. I spent a lot of money on these and want them to last so I'm limiting charge voltage to 28v and discharge to no more than 90% of capacity. If you do the math you'll see there is plenty of juice left to exceed the 400ah rating on the batteries.Overall I am very pleased with the purchase. If I ever need another Lifepo4 I'll come right back here for it. I'm glad I took a chance on this seller and overseas batteries. I saved a lot of money. Short of getting your own cells and doing your own build these batteries are some of the best $/ah you can find on Amazon.

Along my cross country travels, I started encountering issues with battery life in the house part of my camper van thanks to old lead acid batteries.I found a wonderful person that offered to help me upgrade my entire battery system so I jumped on the opportunity! I chose these batteries due to reviews on Amazon and allow me to tell you how well they performed during the year that I had them before selling my van.I have zero doubt in my mind as to whether I would purchase these again or not because the clear answer is YES! What a great and dependable battery. 🫶🏼So simple to install and insane how much lighter it was than the old lead acid monsters.

I have been debating moving to a lighter battery for my canoe for some time. I have used a nut-buster, 90lb marine deep cycle battery for years to power my Minn Kota 30. Lugging that monster I wonder why I never got a hernia. I did use a smaller deep cycle battery, but I ran out of power twice and had to paddle to get to the take-out.This year I decided to go light, to go Lithium. One thing I did not count on was the sticker shock. After two weeks of searching for good reviews AND a good price I settled on a LiFePO4 Battery 100Ah 12V 1280Wh Deep Cycle from SCREMOWER. I wanted at least 100Ah, with marine terminals, it came with an included 10A charger, and I would get it within five days.I received an e-mail stating item had shipped, so I started tracking FEDEX, but FEDEX showed they had not received the item yet and five days now stretched to seven days. Fortunately SCREMOWER has decent customer service and they responded to my query about delivery. They acknowledged they erred and apologized for the delay.The battery and charger arrived on Monday and I promptly charged the battery. Then I noticed the charger was only 7A. I contacted SCREMOWER and they told me the battery now ships with a 7A charger which is yields better battery life, and the charger is considered a gift.On the second day when I charged the battery, the charger started whining and making noise. The mini muffin fan was defective and was headed for failure. Another e-mail to SCREMOWER described the issue and after several e-mail exchanges SCREMOWER agreed to send me a replacement. I was informed that since the charger was a "gift" there was no warranty, but they would send me a replacement as part of "customer satisfaction".So far the battery has performed with issue. We tested it on the Saco river in Maine, taking care not to drain the battery. We need not have worried. We cruised all day, up river, down river, into a strong headwind, and still had ample power to spare. And talk about light - a mere 27lbs. What a pleasure to not have to strain just to carry the battery. I still have more testing to do now that boating season is about over. I may use the battery as a pellet stove backup supply, but that depends on what else is needed to connect to out Harman Advance Pellet Stove (converter, etc.). The battery also works well with my 2000 lb winch.

満充電後、シャットダウンまで使用したところ、積算980whでシャットダウンとなりました。充電には1500wh使用しました。充放電で500wh前後の損失ということになりますね。インバーター経由での数字なので実容量はスペック通りのようです。充電器の電圧は14.74vでした。充電器の容量は7A≒100Wしかないので満充電まで15時間かかるのが欠点。結構煩いので長時間我慢できない人もいるかもしれません。

Charger was damaged in shipping. Sound of loose parts inside. I am afraid to plug it in to charge. The electrical items can’t be returned. What can I do?Update: battery store’s customer service is amazing Responded in a day and agree to send a 15Areplacement charger which arrived in just two days.New charger does get it charged to 14.7V. That works well. And it fits perfectly in my battery box. That’s great, too.I used 1000W inverter to run a fan drawing 0.46A 120V and voltage drops to 13.2V in less than 20 minutes. Not looking good. Will recharge for longer time and test again.Update: Initial drop of voltage running a fan using my 400W and 1000W inverters are scary but seems to stabilize around 13.2V. I think the power draw of the inverters are causing the increased drop.Running my 12V 40A trolling motor is steady with various speeds at 13.3V.The next step is to test the capacity, and use it with a solar panel system and try it on my ebikes.But for now, the battery is looking good. Given the quick and great customer service, I have to change and give this battery a five star.

Not the manufacturer, not the seller and not Amazon will honor the advertised warranty. One of the 4 batteries I received will discharge in less than half the time compared to the other three.When I requested warranty support, the responses from Scremower Direct (Grace) was to crack open the battery case and measure cell voltages. My response was to advise that I was not able to open this case without damaging it. Grace was insistent, even sent a video procedure of someone hitting the case with a hammer to open it. I relented and attempted the impossible.Yes, that case broke. It is hard plastic and very tightly sealed. See the pic, the locking tabs have broken off.Now I have a defective battery with a broken case and Grace is ghosting me.Snip of our conversation:Now you need to open the cover of bat4 as shown in the attached picture, remove the black plasticGraceHello Grace, Where are we with resolving this defective battery? Are you waiting for me to tear into that battery? Honestly I do not want to be left with a compromised case.There is no need to remove the battery, you need to take that screwdriver and pry off the top cover and then open the battery cover.GraceHi Grace, The top of the battery is tightly sealed to the base and there is no gap to insert a screwdriver, even a small one. If I follow your instructions and damage the battery case, will Scremower provide a new case / battery?

Before installing the batteries on my coach I charged them with supplied chargers then let them sit for two days and they held their voltage . The 8mm bolts could be a little longer especially when you have more than cable connected to it . The light weight is nice that makes them easy to handle . The 5 year warranty is good .If the longevity is as good as advertised than after 5 years it will get the fifth star .

Ordered November 30/2020 - arrived December 23. Arrived with 12.3V. Took 10 hours to reach 14.7V using the included 10A charger. It dropped over night to 13.4V and stayed there for daze. The charger shuts off at 14.7V and restarts around 14.2V. The time to drop to 14.2V and recharge to 14.7V is roughly 5 minutes. The charger makes a noise roughly equivalent to a small fan and gets slightly warm. There’s light that turns from red during charging to green when charged. I wanted to test the Wh performance. I’ve been given to understand that the voltage would remain at 12V until the bitter end. 90%+ of rated capacity. I ran 250W of resistive load through a cheap inverter. I ballparked the efficiency loss at 10%. It was probably worse. I estimated the inverter should deliver 1152Wh of 120V AC output based on the the plumped up battery capacity of 1280Wh. After 4.5 hours my multimeter showed 12V. The read out on the inverter showed 11.7V. I stopped there. The battery never got warm at all. The ambient temperature was 60 ish. 1 hour after the end of the test the battery had bounced back to 12.9V. I did not try to use the recovered capacity. Charging it back to 14.7V took 9 hours. So my test would suggest that you can indeed get 97% of the rated capacity out of this battery and still have the voltage to power an inverter. My conclusion is that the battery does live up to its’ claims and way beyond my hopes. I think a battery monitor would be an idea to consider if you want to follow the care and feeding guide lines. It comes with The power switch, voltage led, and USB ports are cute but unless you are going to have the battery nearby all the time I can’t see them being very useful. My testing was somewhat sloppy with rounded off numbers and second rate equipment but I think the general conclusions are valid enough. Certainly clear enough for me to say I will be getting another one when I have the spare change. Given that a 100 Ah AGM will cost $2-300, that you would need 2 of them to give you the same available Wh, that they would weigh 4 times as much, take up almost twice the space, have a gassing off issue, and last, if the hype is to believed, provide 1/10 as many charge cycles, I don’t think this battery is expensive at all. If it proves out over time it will in fact be cheap. I got this battery for my RV but I will be looking into using it for emergency use in power outages and perhaps even to run 2 or 3 circuits in the house permanently during the months the RV is not being used.January 2023. I've had 2 of these in daily use for 2 years going from 100% to 60% at 30 A charge rate. No problems.