Use your Bosch 18V Power4All batter pack as USB power bank adapter for charging up to three devices on the go.
IMPORTANT NODES:
- The 18V lipo battery packs are usually unprotected (with no charging or discharging circuit on board).
Take care during soldering/wiring.
DON'T SHORTEN THE BATTERY WIRES! - Usually on the lift side “+” and on the right side “-” - check the markings on your battery pack.
- Configure the XH-M609 module to a voltage cutoff of at least 14.5 volt - the default setting of 12V can damage your battery pack permanently.
→ Just press two times “+” and use “+” and “-” for increasing and decreasing the value. - And please don't call me if everything is on fire!
Wiring (see picture)
…to connect the battery pack:
- 2x 16AWG wire red á 15cm (or just 1 if you don't want the switch)
- 1x 16AWG wire black á 15cm
…to connect the 3 USB boards:
- 3x 24AWG wire red á 15cm
- 3x 24AWG wire black á 15cm
Printing parts (in assembly order):
(I used Prusament Galaxy Black PLA with the default settings for "0.2 mm speed". No Brim or support needed.)
- 1x “BatteryAdpater”
- add one USB board (just snaps in) - can be a little bit tight
- add two Crimp Terminal Connectors with cables (use some hot glue)
- 1x “MainBody”
- add four M3 screws to connect the “BatteryAdapter”
- add one HCW-M635 module (holds in place without any screws)
- connect all wires to the correct 2 screw terminals (see picture)
- 1x “TopExtension”
- add the two USB boards (just snaps in)
- slide in the “TopExtension” completely into the “MainBody” (maybe add some hot glue)
- 1x "TopCover"
- add two M3 screws to hold everything in place
Additional parts needed:
- 1x XH-M609 “DC 12V-36V Charger Module Voltage OverDischarge Battery Protection Precise Undervoltage Protection Module Board”
- 3x USB board e.g. “QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board 5V”
- 2x 6.3mm “Male Crimp Terminal Connectors”
- 6x M3 screws (6mm) - or just those somewhere laying around in your lab
Optional: - 1x Switch e.g. “PB05A High-Quality Self-Locking SPST Normally Open Mini Push Switch Opening 7MM Small Button With Gold-plated ON-OFF 1A 250V AC”
(Don't buy accidentally NON-Self-Locking ones!)
Kudos
- to “3D print Dude(GreaseMonkey88)” for the base design of the socket adapter!
- and @greatscott, @spiessa and @witnessmenow for the inspiration to this project!
Happy printing!
Tobias (@tstoegi)
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