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MiniUSB 3.7v Li-Ion Battery Charge Board Enclosure

by biketool, published

MiniUSB 3.7v Li-Ion Battery Charge Board Enclosure by biketool Dec 7, 2012

Description

Box and lid for miniUSB/5v to 4.1 volt smart charging board designed for safely charging 3.7v Li-ion batteries. Has one hole for the miniUSB port and another for the cable and a stress relief. One lid has holes to view the charging and charge complete LEDs, the other is solid. I now use this to field charge a tactical light which is used on my bicycle helmet after dark to help find camp.

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This board has a miniUSB input for power and regulates charging on Li-ion batteries. In my case the output is an older 3mm nokia charger tip from an old phone charger, I added a stress relief at the box.

See this also for a similar charger and enclosure http://www.thingiverse.com/thi...

So, how do you draw current from the RD084DY002? Does the USB port output current or is that just for charging the battery.

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Instructions

OpenSCAD files included to allow tweaking to fit your board and stress relief cable boot and LED window placement.
I never got the LED windows exactly right as I was measuring a 90% scale print and didnt want to waste more filament so I used the Lid1 which is also attached.
I think I printed everything at 110% to give extra room to seat the board and fit the stress relief boot, I would probably leave both tops open and make a bit of the lid come down to close the port and cable boot in if I were to need a better box.
The board is listed as 5V Mini USB 1A Lithium Battery Charging Board Charger Module and has a silkscreened part number of RD084DY002 it is 2cmx2.5cm and ~1cm tall.
These regulator boards are cheap on ebay and can be used to charge most phone batteries if you have a charge base.

Comments

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untitled86 on May 30, 2013 said:

So, how do you draw current from the RD084DY002? Does the USB port output current or is that just for charging the battery.

biketool on May 30, 2013 said:

This board has a miniUSB input for power and regulates charging on Li-ion batteries. In my case the output is an older 3mm nokia charger tip from an old phone charger, I added a stress relief at the box.

See this also for a similar charger and enclosure http://www.thingiverse.com/thi...

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