Redodo 36V Lithium Battery 50Ah LiFePO4 Battery with Low-Temp Protection, 50A BMS, 1920Wh, 10 Years Lifespan, Deep Cycle Group 31 Lithium Battery for 36V Trolling Motor, Yacht, Marine, Boat, Golf Cart

Using this battery for my NK300 motor and it is working out great. The charger activated it, charged for several hours initially and has been used a couple times. Hard to say run time on it yet as I have yet to push it long enough for it to get low. What I do know is it has plenty of AH for my use case.

*Updated: The first battery seemed to not hold a charge that well despite many tries. It was under their warranty in which I had bought under "Zooms". I reached to their new company name "Redodo". Quickly Lillian responded and sent me another "Zooms" battery to test out. She's been patient throughout and trusting of me. As things moved past the holidays into the new year I was truly unsure at first but we communicated throughout. I believe I got it figured out now. For me it is best to charge around 15 amps. When I charge faster it seems to also consume power quicker as well.. Also when it drops down to 10% or less it gets more unstable which I now use it as a sign to charge up as I don't want to leave it in that state. I use both solar to charge and also an AC to DC adapter. I think it's safe to say this a great battery. Taking into account line power loss and inverter efficiency I am able to run this thing 80%+ capacity almost each time. Thanks again Lillian for your great customer service the new battery works well in which I use almost everyday!

I decided to purchase the 50 AH battery vs. the 100 AH battery for a 55 lb thrust Minn Kota trolling motor for a 14' jon boat, despite reading various recommendations that a 100 AH battery (minimum) would be necessary. The battery set-up (including blue tooth connection and app that monitors charging, etc.). We've used the battery on three separate 1-hour to 3-hour fishing sessions on our small (45-acre) lake and still have 60% charge remaining on a single charge. We run the trolling motor at 100% between fishing spots on the lake, and use it to adjust the boat after wind causes drifting, etc. Overall, the battery has performed well and I see no need to upgrade to a 100 AH. The only issue I've had so far is that the bluetooth connection drops at times, but this might be a built-in function to reduce the draw on the battery. The only other thing to be aware of is that, if you are used to using a standard battery charger/maintainer to charge/maintain a standard deep cycle lead-acid battery, you will need a charger that specifically charges (or has an option to charge) LiFePO4 batteries. I had one on hand already for a LiFePO4 battery I used for a portable dept finder.

Advertising this as a marine battery that is good for starting an outboard motor is criminal. Sure you can start the motor. But it's highly likely the alternator on your outboard motor is not rated for a LiFePO4 battery. In my case, the alternator overcharged the battery, causing the BMS to disconnect the system, leaving us dead in the water. I'm trying to reset the battery so it will be useful but it won't be in my boat. It appears there are ways to regulate the alternator but it doesn't appear to be cost effective. So, good luck. It's probably a decent battery but not for this application.

2 parts to this review. The short version first (the TL;DR), then the detailed review later. (Oh, My GOD....please stop talking!!)I bought this 50Ah battery specifically because of the 3.2 volt cells inside, wired in series for 12.8 volts. They're tough, built like a tank & last for many years. Off-grid cabins use these cells, only larger. It doesn't have the silver-ish colored battery packs (like a cellphone does) or the 18650 cells clumped together, like portable power stations & similar products & other 12 volt batteries do. Yes, I know those are just Lithium & not Lithium Iron Phosphate. Big difference there. You really DO get what you pay for here! Good Grade A automotive cells with a BMS all in one package. It arrived here with 13.18 volts but couldn't test the amperage as my multimeter only goes to 10 amps. So I hooked it up to the charge controller, plugged in the panel & it took 380 watt hours to reach absorb mode (14.2 volts) For 2 hours it absorbed, then switched to float & the voltage dropped S L O W L Y....to 13.5. Full charge! Only took around 7 hours to reach absorb.. So yes, please charge (a LiFePO4 charger ONLY!) this fully before using it. The voltage on arrival was good, but the capacity just wasn't there...YET! It's easy to be fooled, as we're used to lead acid batteries & how they work. This is NOT that kind of rodeo with a LiFePO4 battery!Part two: What I bought it for...This battery replaces a 35Ah AGM lead acid battery for a portable solar kit I pieced together, used for dry camping (or car camping) or just to have power when shore power isn't available. I DO live in hurricane country so it's nice to have at least 100 watts of free power as a backup. That kit consists of a 100 watt flexible mono panel (weighs about 4 pounds) feeding into a Victron Energy SmartSolar MPPT charge controller. This Redodo is just a bit larger than the 35Ah AGM I took out, but I found some foam padding that can be placed inside the group 29 battery box to make everything snug & easily transportable without rattling around, & the charge controller sits nicely on top of the foam. It's not pretty, but it works...& that's the name of the game here. It! Just! Works!All the accessories I use for camping either are 12 volt direct, 12 volt rechargable, or USB. No need for 120 volts...I'm not running a restaurant! Charging the cellphone, the portable TV (hey...gotta keep entertained at night...right??), run a small fan & have lights at night That's all I need. I no longer have to monitor the battery for the dreaded 50% Depth of Discharge curse! I can take a LiFePO4 WELL beyond that level & still get more cycles out of it than I can the AGM. But since that AGM is around 10 years old, I've seen a decrease in power retention or how much power it delivers, so it was time to upgrade (& futureproof!) the battery to a LiFePO4.I can't comment on the longevity of this battery, since I just received it about a month ago & have only used it for three days & nights, camping. But if the vendor's claim of at least 10,000 cycles is true, it will last for many years. As far as value for the money goes, only time will tell. Good products will last for many, many uses & will need little to no attention or maintenance. Bad products are tossed into the bin, vendors are notified & refunds are mandated. Nobody gets angry, everyone keeps their cool, it's just a business transaction that didn't work out. That's only fair, right?Redodo, at the present time, I'm happy with the purchase. It does what it claims to do & I can't ask for more. Thank you!