I realize this thread is old, but I'm posting some info for anyone searching in the future.
@ZeroEcho - as you've likely determined, the Adafruit battery you linked DOES have the same connector as the Espruino.
In fact, all of the LiPo/LiPoly batteries sold by Adafruit and SparkFun have the correct connector.
Adafruit also sells the connector with pre-attached wires: https://www.adafruit.com/products/261
Thanks for your post. I really wish I had seen it earlier, these connectors with pre-attached wires have by far been the hardest thing to obtain.
@lavamantis started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I realize this thread is old, but I'm posting some info for anyone searching in the future.
@ZeroEcho - as you've likely determined, the Adafruit battery you linked DOES have the same connector as the Espruino.
In fact, all of the LiPo/LiPoly batteries sold by Adafruit and SparkFun have the correct connector.
Adafruit also sells the connector with pre-attached wires: https://www.adafruit.com/products/261