Charge controller with text for 10S LiPo Batteries

All printing in PLA at 15% infill no supports 0.2mm layer

Note this device uses mains power so if you are not confident with mains power (110V or 220V to 240V dependent on your country best not to try this)

Manage the charge in a 10S lipo battery devices in my case Ebikes and 10S lipo powered cordless garden tools (Stihl chainsaw).  This is a relatively non invasive method as Bosch and other devices often have have some additional communication wires from the charger to the bike/device so controlling the mains power does not interfere with the charger operation but will disconnect the mains power when it reaches a specific charge voltage.

Note both my Ebike and Chainsaw have 10S lipo systems so the relay I used is a 36VDC powered relay with 220V contacts from Aliexpress.  For other battery voltages select an appropriate relay.

The DC connection for the charge controller is connected in parallel with the wires that go from the charger to the item to be charged, for Bosch Ebikes there are 4 wires, the larger two carry the charge power (check with a multi meter).

Slicing and printing the text and lid. (satin print surface works well for this)

1) Place the Lid face down on the bed

2) Spilt to parts 

3) Turn the lid off and merge the text to one body 

4) Slice the text without skirt at 0.2mm

5) Turn off the text, and slice the lid.

6) Print the lid over the text, the printer will print as if the text is not there and you get a very nice surface 

Using the switch

Switch position at 100% bypasses the charge controller so you will get a full charge on your batteries.

For my Bosch Ebike, I Plug the charge controller in to the mains and then plug the Figure 8 plug into the receptacle on the charger and plug the charger lead into the bike.  Next set switch to 100% briefly as this starts the Ebike charger which then powers the charge controller.  Now switch to "storage" and the charge controller will limit the charge to the level you have set (Note the percentage charge already in the batteries has to be less than your setting as it can not discharge the batteries).

Alternately for Bosch turn the Ebike on with the charger plugged into the bike then turn the power on to the charger, both methods work.