ECO-WORTHY 48V 50Ah Metal Case Lithium Battery,Built-in 50A BMS, 2~3C Peak Current for Strong Acceleration, Lightweight Lead-Acid Replacement, 4000+ Cycles for Lawn Mower, Golf Cart, Solar Off-Grid

I replaced the PATHETIC lead acid batteries in my electric riding mower about 3 years ago. The difference was unbelievable. No gas. No maintenance. Just charge and mow. I run out of power before the battery does. After 3 years on an acre of lawn, still going strong. The original lead batteries wore out the first season and even when they were new, I wound up pushing the mower back to the house to charge the batteries more than once. Riding is better than pushing.

Last year I purchased this to replace the 4 x 75ah lead acid batteries on my Ryobi RM480e riding mower. While 50ah is substantially less than the oem batteries, it easilly doubled my mowers working range. Only issue is that it's very hard for the guage to determine the state of charge given LFP batteries flat voltage curve. Overall I am very impressed with this pack. I will update this review if I run into any issues but season 2 is going just fine.

My simplified absolutely easy LiFePO upgrade of my Ryobi RM480ex riding lawn mower using the $400 Eco Worthy 48 volt LiFePO purchased on Amazon. All the original battery brackets and lead-acid batteries were removed from the slide out battery tray and discarded, since the parts were no longer needed. Only the main positive negative cable with the gray Anderson connector is reused. The blue charging connector was disconnected as well as the black cube shaped charger lock out relay and the now unneeded black rectangular temperature sensor connected to the negative battery post. The original charge port is removed by taking off three Phillips screws off the back of the port. The connector for the black cubic charge lock out relay is cut off. The yellow and red wires are stripped and connected together. The rest of the charge port assembly is not reused. The Eco Worthy battery is placed on the slide out tray and its boundaries are marked. 3M double stick tape (I used the clear instead of the foam which will retain moisture.) is placed within the space on the tray where the battery will sit. The battery is then secure with the tape. I used an 8 foot long luggage strap in an X pattern to hold down the battery. Any similar luggage strap will suffice. I then cut out all the protrusions within the charge port cavity and drilled half inch holes in the three places with a step drill bit. Since only the top hole is needed to the small XT60 socket, I covered the two bottom ones with half inch hole plugs, I fabricated two cables with 15 amp fuse and holders to make the charge cables. The 3/8 inch ring connectors were attached to the end to be connected to the main battery. I used 1/4 inch insulated spade connectors to connect the other ends of the XT60 socket to the fused charged cables. THey will go through the 1/2 inch hole to connect to the charge cables, but will not allow the XT60 socket to fall through. The positions of the male female connectors were reverse between the two cables to allow only the positive cable to be connect to the positive position on the socket. The photos show how the charger is connected with an extension XT60 cable with male and female ends, Everything except a few electrical connectors can and was purchased on Amazon.com for about $500.

The 20 mile, is not right! I got 35 miles out of frist charge! Great up grade! Easy install.

Works great, size fit in the Ryobi mower and use some wood to clamp in place and strap down.

Excellent purchase I have three now.

Faced with having to replace the lead-acid batteries on my Ryobi 480e a 3rd time, I decided to switch to a LiFePO4 battery system instead. To get better lifetime and to simplify future battery replacements, if ever needed (for example, this battery weighs a bit over 50 lbs, vs. the almost 200 lbs of the batteries it replaced; also, LiFePO4 batteries can handle way more charging cycles than the original SLA models). Although this new pack has less power capacity than the set it replaced, if it lives up to the longer-lifetime spec for LiFePO4 batteries I'll get way more work out of this replacement than the original, so I'm calling this an "upgrade". Note that I had to change the charger (found a good one on Amazon for $130) and battery monitor (found a good one on Amazon for $30) as part of this change, since LiFePO4 batteries output higher voltage than SLA batteries. The overall cost even with these changes was barely over 50% of what a full SLA battery replacement would cost, and the prices of LiFePO4 batteries continues to decline (unlike SLA batteries). So far I've run the mower through 3 charge/usage cycles since this upgrade and love it! It easily gets 1 full hour of mowing on a large lot with lots of steep inclines, with plenty of capacity left over. Note: I do have good electrical skills, but this was not a difficult install. Just be very careful when battery power terminals are exposed.

Works great, it's just a lot larger than anticipated. Make sure to measure.

La batería funciono bien unas 6 semanas, después un mañana el voltaje bajó a 0.4v.... después de investigar el problema una de las celdas estaba en 0.4v y las otras seguian en 3.29v... lo que indica que este bms a veces no hace su trabajo correctamente... tuve que comprar un balanceador activo y ahora ya funciona bien