ECI Power 12V 20Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2000-5000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications

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.

Excellent direct fit replacement for the old NiCd battery in my elliptical and maintained full functionality. No issues recharging and gives at least the same capacity of the original at a fraction of the weight. Hard to beat for the cost and stability of charge over time.

Got the first battery , completely dead, even tried to charge with Lithum charger, still no good, requested a return and was sent one just like the first, back to requested a return and they gave me my money back.

I bought this pack to augment two identical packs I've been running (occasionally) for a couple years to power my 50W ham transceiver. Once properly charged, the first two cells carried my radio well through a 36 hour event. Adding the third just assures that my radio will stay powered and ready.

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 run several trail cam to monitor wildlife and security around ranch. Best I could get out of sealed lead acid batteries is about 1 week before having to recharge. Life of batteries was about 14 months. Tried this battery in a high traffic area and after three weeks and lots of videos it’s still at 50% power.

I bought two batteries about three years ago and they worked great. And then I bought a third battery 6 months ago and all three batteries have worked excellent. I’ve had no problems. It’s nice to have the energy. I would buy from these people again. They answered the phone.

Got this to replace failed battery on my trailer brakes. Perfect fit, flawless operation so far - only had a few weeks.

Muy buena batería para mi sistema de respaldo de cámaras e interneth, compraré una de más capacidad para otro UPS excelente diseño y buena marca

Muy bueno