Quantity   Component name
1 × Sparkfun PowerCell Battery charger/boost converter
1 × STM809M Reset Detector (or equivalent with active low reset) Power Management ICs / Power Supply Support
1 × IRLML2803 n-channel MOSFET
1 × 1 k-ohm resistor
1 × Si2307BDS p-channel MOSFET (or equivalent)
1 × 0.1 uF capacitor
1 × 100 uF, 10-16V electrolytic capacitor
1 × Small perf board
3 × SOT23 adapter boards Allow mounting the SOT23 components on the perf board
1 × 2000 mA 3.7V Li-Ion battery
1 × 5V 1A AC-DC Power supply (the unit that came with the device you are powering)