SparkFun Lithium-Ion Battery 110mAh - PRT-13853 2245 If you're not using the

If you're not using the RTC part of the FeatherWing

Need this for a student build

Yes—most UNO R3 shields are compatible

product-copy table th

Mega 2560 Case (Protects the bottom pins from shorting)

SparkFun Lithium-Ion Battery 110mAh - PRT-13853 2245 If you're not using the3. 7V Polymer Lithium Ion Battery 110mAh The Polymer Lithium Ion Battery 3. 7V 110mAh is a rechargeable lithium cell with a JST connector, designed for portable electronics, wearables, IoT devices, and maker projects. Pair it with a LiPo charger like the TP4056 or Adafruit Micro Lipo. Safety: Lithium batteries can be dangerous if punctured, short circuited, or overcharged. Always use a proper LiPo charger with protection circuitry. 3. 7V battery size