Parkside X20V to Bosch GSR 14,4 battery adapter

DISCLAIMER/WARNING - Use at your own risk. It can be dangerous to over discharge lithium batteries: risk of fire or explosion.

The 14,4 V NiMH batteries in my old and trusty Bosch GSR cordless drill were dying of old age, with almost no recharge capacity left, so I decided to make and adapter to use the really good and cheap Parkside X20V batteries.

There are some adapter designs out there, but I wanted to recycle as much of the dead batteries as possible, so I decided to reuse the red upper body of the old battery and the electrical connectors and cables.

I made an adapter able to receive the Parkside battery and a flexible clip to latch on the drill body. They are bolted to the red upper body of the old battery, using the original screws.

The clip must be flexible, so I would print it with only two perimeters and a moderate infill (20%).

I reused the old battery electrical connectors with the drill and made the new ones for the Parkside battery with two simple faston blades. (Be aware that the positive and negative terminals are in different sides in the old and the new battery. You will have to switch sides.) Is a good idea to secure the faston blades in place with some hot glue.

The voltages in both batteries are different (14,4V vs 20V) but the drill seems to work with no problem (faster). Anyway, use it at your own risk, you are using a different voltage of that the tool was designed for.

Do not use the Bosch charger to charge the Parkside battery.

Clip version 2: Attaches more securely the adapter to the drill body.