$46.84
$93.68
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The Sparkfun Polymer Lithium Ion Battery – 40mAh (JST-SH) is an exceptionally compact and lightweight battery utilizing advanced Polymer Lithium Ion chemistry, offering the highest energy density available. It delivers a nominal 3.7V at 40mAh and is equipped with a standard 2-pin JST-SH connector. The battery includes built-in protection against over voltage, over current, and minimum voltage.
Note: Use caution in wearable projects; conductive thread shorts can cause sparks and heat.
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