ECI Power 12V 5Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS

Bought before my hunting trip in November, for my camper. Everything worked like it was supposed too. I have a built in generator in the camper I plug my lifepro charger in and charge when it was low. Charge very quick.

I had an issue with one of four batteries.Called customer service at 8:05am and had a tracking number at 9:07am for my replacement.Great customer service.

It worked really in my ham radio build.

I haven't been able to decide whether or not this is a compatible solution to the higher priced Tesla recommended 12 volt which is a critical component in the EV design. While it seems to maintain the voltage requirement and doesn't have a high amperage draw I am still having a problem with the high voltage contacter closing due to slow bus bar voltage when the car is switching from 12 V to high volt. I will probably buy the recommended one to rule out and update accordingly. However this battery does seem to maintain voltage for an extended period and doesn't dissipate like a wet battery would. I suspect this battery holds true to the description and would be a great choice in comparison to legacy type batteries. I appreciate the direction this technology has to offer, it's size to weight to output and longevity are superior without question. Seller was true to delivery time and provides a good product at a fair price.

I used the battery 5 or 6 times to power an electric fishing reel. I bought a special charger for it. I charged it after each use.. I checked the voltage before my last trip only to find the voltage was 0.03. The charger wouldn’t charge it. After a week of dealing with this seller they finally admitted the battery was bad. They told me to return it at my expense. I paid $32.20 to ship it back. Now they tell me it’s not covered under warranty because the label on it had gotten wet. They advertise this as a marine battery. Terrible customer service.After I asked them to send my battery back at their expense they decided to send me a new replacement battery. I have this battery in a padded waterproof box.I will give them 2 stars now.Update: 5/21/23 the second battery won’t even light an led lamp. The lithium charger won’t charge it. I’ve tried jumping it from another lithium battery without success. The battery shows 12.17 volts. When connected to led lamp voltage drops to 3.64. Customer service was so difficult to deal with the last time. They basically let me know they wouldn’t help again.

I have several of these batteries that I purchased off Amazon. The last one received was missing the terminal bolt and washers. I contacted the company about the issue and they replied within several hours (I was impressed by that) and apologized that something was missing from my order and they would send replacements out. 2 days later I had a FedEX envelope on my front stoop with the missing hardware! WOW! Not use to that!Now that is service!I use these batteries everyday from Cellphone power to Deer Cam in the wood (last about 2 months) . Never had an issue with the batteries. Great stuff.-Doug

I was quite surprised at how light in weight these batteries are compared to the deep cycle batteries I was using in my boat. I'll be buying two more for my smaller 12' V-bottom boat. The smaller boat I have to really watch my weight as I load the boat and when I'm on lakes where I can only use an electric motor, I've had to lug a heavy deep cycle battery, These batteries were so light I carried 2 of them down at a time to my pontoon boat. I use one for the trolling motor and one for the anchor winch. I've been using them all summer so far and it's not died down as a regular deep cell battery would. I even had a problem one night with the gas engine not starting and I had to use the trolling motor to get the 24' pontoon boat back to dock. I would estimate that I've used the trolling battery for about 18 hours so far and it still powers my trolling motor as it did when I had it fully charged. I did read that I could hook the two together in either series or parallel, I suggest reading up online on the advantages and disadvantages of both hookups. Next summer I think I'll buy 2 more and hook 2 in parallel to each of my devices and see if I can make it through the summer. I also thought about getting a solar panel to charge the batteries, that way I wouldn't have to worry about taking them off the boat till it's time to store them for the winter. I'll update you on how they handle solar charging once I do that. The only drawback that I found was that you have to use electrical terminals to make the connection as the terminal posts are too small for conventional battery cables to hook to.

Batteries seem ok (just installed them though) but the spade connectors are larger than those on lead acid batteries the same spec. That made for an annoying install since I needed to replace the spade connectors on the alarm system to use this.