when modding sticks with custom applications like led mods or wireless modules high performance power supply units are needed. First I started with normal rechargables, but now I'm using rechargeable lithium ion high performance battery with max1811 to ensure long life of up time. The Max 1811 supports recharging lithium ion high performance battery via USB. Battery supplies power and can be recharged at same time.
First challenge was the assembly of max1811. This chip doesn't exists in DIL Version. Thus I soldiered the soic version to pins.
First test with led indicating the recharging.
Old Nokia battery is used here. I've spended a case, too.
USB Jack applied...
and mounted into my stick. Left corner is the box with lithium ion high performance battery and on the right hand side the USB jack for recharging. To be safe chip is configured to recharge with 100mA.
- MAX 1811 ESA
- 4.7 µF
- 2.2 µF
- 10k Pullp Resistor
- 220 ohm led resistor
Datasheet: for assembly refer to page 5.