TimeUSB 100AH 12.8V Pro LiFePO4 Battery Review

airshot said:

Well...my 2019 group 31 batteries died after only two hours today, so I guess it is time to replace them. So now reading up on these lifepo4 batteries. My 55# MK motor currently runs off two 31 batteries and did last for a good 6-8 hours on the water. I am thinking using only one 100 ah lifepo4 and see how long that runs. Or Mabey jump up to 125 ah or higher single battery. Any advantages/ disadvantages to running duel lifepo4 batteries ?

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airshot said:

Well...my 2019 group 31 batteries died after only two hours today, so I guess it is time to replace them. So now reading up on these lifepo4 batteries. My 55# MK motor currently runs off two 31 batteries and did last for a good 6-8 hours on the water. I am thinking using only one 100 ah lifepo4 and see how long that runs. Or Mabey jump up to 125 ah or higher single battery. Any advantages/ disadvantages to running duel lifepo4 batteries ?

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Ray Clark said:

I, too, have a 55# MK. I use a single 100Ah LiFePO4 battery and have never had issue with running out of battery capacity while on the water. I don't have the equipment or meters to reliably check remaining charge at the end of a 6 hour round of fishing.

My boat is only a 14' Lund; it is pretty light and easy for that TM to handle and push.

If it was me, I'd buy a single 100AH battery and run it and then decide if I needed the extra capacity.

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airshot said:

Thanks for confirming what others have said....thinking about m moving up to a 140 ah battery for only a little more. Have to decide on brand and get a 20 amp lifepo4 charger as well. Most all the 140 battery mfgrs have recommended a 20 amp charger.

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Ray Clark said:

If there's a single upgrade to my LiFePO4 battery that I'd like to have, it's a real Battery Management System that has a readout, or at least a bluetooth connection.

If I was researching batteries, I'd focus on looking at reviews that cover the brand's BMS. I think that's where the real value is coming in these days.

Given that my 100Ah battery cost about $350 in 2022, looking at 140Ah batteries for well under $300 seems like a no-brainer.

Edit to add: I'd also want one with a little bit better safeguards on charging at either end of the temperature scale.

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LDUBS said:

Which compatible battery charger are you using with the LFePO4?

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wmk0002 said:

The TimeUSB 12v 100ah Group 24 battery is on sale for $190. Its smaller dimensions than the group 31 one and a few pounds lighter too. I also was told by thme that you can mount the 12v 100ah Pro group 31 on it face if needed. Taxes take it to about 200-205.

Ive also found the WattCycle 12V 100Ah Mini Bluetooth LiFePO4 Battery for $220. $22 off if you use the code NEW10. So with free shipping and taxes its back to about $215. Not bad deal for a mini, which is listed as 20.8 lbs and then has bluetooth too. I know nothing about them though.

Lastly, I see that Power Queen has some on sale until the 23rd. Their group 24 size with bluetooth and low temp protection battery is $216. I found a code 5%BELLA for 5% off so total with free shipping and tax brings it to $223. If they will confirm that I can mount this one face down I'll pull the trigger on it. Its few bucks more the Wattcycle but I dont know anything about them and I like the power queen bluetooth app based on youtube reviews I have watched. Seems like the move at only 1 lb heavier and then less than $10 more.

I'll update yall if I find any more coupon codes. I have some tool installed in my web browser that automatically searches for you and applies the best deal.

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wmk0002 said:

I ordered the WattCycle 12V 100Ah Mini Bluetooth yesterday from their Ebay store. Initial price was $10 higher than on their website but Ebay had a coupon for $40 off. Total price including tax and free shipping was $202.

I ultimately opted for this battery because it is the only mini version that had the bluetooth feature and it does have the low temp charging protection. I was leaning towards the Power Queen group 24 with bluetooth, however, the group 24 is about 1/2 - 3/4" too big to fit inside the compartment opening and I didn't want to have to trim it out any larger. Plus the WattCycle has a 7 year warranty as opposed to a the 5 year most of the others in this price range offer. There were plenty of positive reviews of both teardowns and load tests on this model so I feel confident in the quality. My only hesitation is that the Power Queen bluetooth app looked better.

https://www.wattcycle.com/products/wattcycle-12v-100ah-mini-bluetooth-lifepo4-battery

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