Following the simple steps below, we were easily able to convert our dying electric riding lawnmower into one which: STEPS:
0:00 INTRODUCTION
0:25 OPEN BATTERY ACCESS PANEL
0:57 DISCONNECT BATTERY
1:29 REMOVE MAIN BATTERY BOLT
1:59 REMOVE BACK COVER
2:18 REMOVE BATTERY TRAY BOLTS
2:54 DISCONNECT CHARGER LOCKOUT WIRE
3:29 SLIDE OUT BATTERY TRAY
5:06 DISCONNECT TERMINALS AND REMOVE BATTERIES
6:28 VACUUM OUT MOWER AND PREPARE IT FOR REASSEMBLY
7:01 PLACE BATTERY ON TRAY AND CONNECT TERMINALS
7:21 RECONNECT CHARGER LOCKOUT CABLE
7:48 SECURE BATTERY TO TRAY USING LARGE ZIP-TIES
8:03 ZIP-TIE 2X4 SPACER TO TRAY
8:27 SLIDE BATTERY TRAY INTO MOWER HOUSING
8:51 BOLT DOWN BATTERY TRAY
9:07 CHECK VOLTAGE AND CONNECT NEW BATTERY
9:32 CHECK VOLTAGE AT CHARGING PORT
9:45 CONNECT TO BATTERY USING BLUETOOTH APP
10:00 PLUG-IN CHARGER AND BRING BATTERY TO 100%
10:47 UNPLUG MOWER AND TEST THAT ALL IS WORKING
11:51 CLOSE UP THE BACK PANEL AND YOU ARE DONE!

As an Amazon Associate we earn a small commission, at no cost to you, through affiliate links. Battery Options The 50AH battery is also an option if you have under 1 acre: Materials Used Tools Used Our Choice of Charger We used the stock charger (Ryobi OP48RM) for the following reasons: There were good discussions on whether to use the stock charger, here is a sample: https://tinyurl.com/3jwv8j2e https://tinyurl.com/2h3tds37 Our Choice of Battery (DCHouse 48V 100Ah) We chose to go with the DCHouse battery because of price and positive feedback in the group. It seemed to be a new arrival to this battery form factor and people in the group were speaking highly of its BMS/Bluetooth app. We chose 100 AH because we have a 1.25 acre plot and wanted to have more than enough coverage. Here is a great summary of this topic. https://tinyurl.com/5bfusm7m Battery Meter We chose not to add any battery meter (including the one that came with the battery). The Bluetooth app that came with the battery was more than enough for our purposes. At any time we can take out our phone and see a realtime summary of the state of our battery and since we have plenty of capacity for our size yard, we don’t expect to be running low on charge during use. https://tinyurl.com/hekbwnh6 Overall Outcome We love our newly upgraded mower, all of the changes are for the better. The main problem of the battery running low during use are now gone. In addition, we no longer have to keep it plugged in when not in use. This is a benefit especially in the winter where the mower ended up taking up a good chunk of our garage. The performance is better during the mow, it is slightly faster and never bogs down on hills (and our yard has many). Now we charge it to 100% and then use it until it gets down to 30%, charge it over night and then unplug it after the charge is complete. Related Links How Your 48v Battery Can Power Your Home in Emergencies: https://tinyurl.com/mt7a7mcs Greg Handley's Facebook Group:   / ryobi48vmowers   DCHouse 50AH install into a RM300e mower:    • DC House 48v 50ah Bluetooth Battery in my ...   Music https://tinyurl.com/yc76pa4h Supporting the Channel May God Bless You.