LiTime 12V 100Ah LiFePO4 Lithium Battery Built-in 100A BMS, 1280Wh Output Power, 4000-15000 Deep Cycles Backup Power, Perfect for RV, Solar, Marine, Home Energy Storage (4 Packs)

I had to replace the batteries in my Ryobi ZT480EX, which had shown serious signs of degrading after only 3 years. These batteries are a drop in replacement in form factor and connection. I had to change NOTHING! They fit, and are approximately 40# lighter PER battery! The batteries supply significantly more usable power to my mower than the original batteries, nearly doubling my mowing ability between charges. Charging can be done with the original Ryobi charger, but that charger is not optimized for these batteries and should not be left plugged in for extended periods of time. I bought a LifePO4 battery charger to properly charge and maintain this investment. Yes. These batteries are more expensive than the orriginals, but will deliver significantly better performance with a much much longer service life. Easy choice!

I bought these to replace the lead acid batteries in my Ryobi rm480e riding mower. I’ve only had them for a day but am loving them so far. A lot more power. I mowed the yard and a hillside behind the house and the battery did not come down a bar on the meter. I upgraded from 75ah batteries to 100ah batteries. If you do that you’ll need to adjust the length bars on the battery tray since the 100ah are longer than the stock 75ah lead acid batteries. Other than that it was a drop in conversion. Hooked the up, turned the key and had 100% power.

Item purchased worked very well and I would purchase it again if needed.

Update: LiTime has offered a full refund. I have replied as: Thank-you for your offer, it is very much appreciated. There exists a Facebook group dedicated to the Ryobi electric mowers. The problem I am experiencing is not uncommon. A work around has been engineered in which a pre-charge circuit is added that allows the motor capacitors to be charged via a by-pass circuit and an in-line resistor which limits the current flow for ten seconds prior to closing the main mower contactor. I will be adding this by-pass and keeping the batteries. Thank-you again! Original post: From LiTime: "Mowers typically have high starting currents that our batteries cannot withstand and we do not recommend that you use our batteries in your mower." Too late for me. Hope this helps someone else. By turning on the key with the charger plugged in, I believe I have a work around. Time will tell if this has any negative consequences.

As advertised