3.7V 4000mAh Lithium ion Polymer Rechargeable Battery 125054 with JST Connector

Voltage: 3.7V
Typical capacity: 4000mAh
Min capacity: 3800mAh
Material: Lithium Polymer
Connector Type: 2P PH1.25mm Pitch(Fits most Meshtastic boards)
Width: 54mm
Height: 50mm
Tickness: 12mm

Best fit for Hel-TXT build

Keep the battery at 40-60% charge during long storage. We recommend charging the battery every 3 months after receipt, keeping the voltage at 3.7-4.0V, and storing it in a cool, dry place.