3 This is a simple but effective charger for LiPo batteries. It has a higher
4 charge rate than the on-board charger on [TeleMetrum](../TeleMetrum), and
5 will be necessary for charging the batteries used with projects like
6 [TeleNano](../TeleNano) and [TeleMini](../TeleMini), which do not have
7 on-board charging capability.
13 * Wall-wart power supply to our standard 2mm LiPo battery connector
14 * 1.0 x 0.4 inch board
16 ### Developer View ###
19 * [Microchip MCP73837](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en531507) Li-ion battery charger chip
20 * Strain-relief holes for soldering to wall-wart leads
22 * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
24 * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html)
28 The design files can be found on [git.gag.com](http://git.gag.com) in the
29 project [hw/lipocharger](http://git.gag.com/?p=hw/lipocharger;a=summary).
33 We need to build and evaluate some prototypes, and review costing, before
34 deciding whether this design will go into production.