What's your smallest but best battery + charger combo to fit in small projects?

I've found several fairly good micro and mini USB chargers on eBay but one of the ones that I bought which has an LIR2032 rechargeable button battery + holder soldered on to it is about as much use as a wooden eye at a keyhole ;D

I'm making a project with an ATTiny85 and I need a small battery + charger combo with as much bang per buck as possible.

Do you have any favourites that you might suggest please?


Sparkfun sells some extremely small Li-Po batteries, along with chargers for them. They won't compete with ebay prices but the schematics and information provided by Sparkfun will ensure that your project will work.

I do like the Sparkfun chargers, really well made but they cost around £7, to £7.50 and I'm not even sure if that includes postage.

So far I've found this for the charger (under £1 each if you buy 5): http://www.ebay.co.uk/itm/Micro-USB-5V-1A-Lithium-Battery-Charging-Module-Board-Lipo-Charger-TP4056-UK-/271811105735?pt=LH_DefaultDomain_3&var=&hash=item3f493453c7

and this for the battery: http://www.ebay.co.uk/itm/281632383486?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

but I have to wait for the batteries to come from China.