Replacing/Upgrading a Lithium Battery for Sileno Minimo Robot Mower

In this video, I document my process of replacing the 18VDC rechargeable lithium battery on our Gardena Sileno Minimo robot lawn mower. It had gotten stuck while I was ill in bed for a while so the mower slowly drained its charge to a point of no return.

Fortunately, the aftermarket replacement battery from Amazon was much more affordable, shipped quickly, and holds a much longer charge (3.4 Ah). The mower now cuts roughly twice as long between charges.

Brand: Exubertree
Capacity: 3.4 Ah (3400 mAh)
Plug: molex 4-wire
Model: CS-HAT315VX
Price paid: $45
(compatible with many Sileno robot mowers)

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6 thoughts on “Replacing/Upgrading a Lithium Battery for Sileno Minimo Robot Mower”

  1. Wow, "Gardena Sileno" is an impressive video! As someone who has been searching for lawnmowers without perimeter wires, I can't express how thrilled I am to see the Segway Navimow robotic lawnmower. It offers such convenience and efficiency compared to other brands. I highly recommend others to give it a try for its advanced features and hassle-free mowing experience.

  2. Warning! I have mower with the same battery (McCulloch ROB S600), which I opened to replace battery cells. It has a BMS (Battery Management System), protecting from over current / over voltage and balancing the cells to prevent failure (which in case of LiPo can be really ugly). I don't see any electronics in the unit you purchased, and therefore would not recommend using it.

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