From News Coulomb.

This is the first official episode of my Ryobi RM300e restoration project. This mower worked well for me for nearly two years, but the Achille’s heel of these Ryobi riding mowers is their use of lead acid batteries. As my 12 V batteries started to lose capacity, the mower became more and more unusable.

Now, I am restoring the mower with a new lithium battery, but unlike other models, this mower does not have a removable battery tray. Now I am hitting a wall with this project. Do I cut into the chassis, or do I explore other battery options?