3.7V 200mAh Lithium Polymer Battery – KP Battery

The 3.7V 200mAh Lithium Polymer Battery from KP Battery (model LL-402030) is a miniature single-cell LiPo pack at 3.7V nominal and 200mAh capacity, terminated with open-ended bare wire leads. The LL-402030 model number encodes the cell’s physical dimensions 4mm thick, 20mm wide, and 30mm long a very compact pouch format that fits inside enclosures and wearable devices where standard-size LiPo packs would not physically fit. Bare wire leads instead of a pre-fitted JST connector give the builder flexibility to solder directly to PCB pads, crimp a custom connector, or attach whichever JST pitch the target board header uses.

At 200mAh the 3.7v lipo battery 200mah stores 0.74Wh per charge enough for low-power microcontroller running in sleep-wake duty cycles, small BLE beacon nodes transmitting at intervals, and compact sensor devices that spend most of their time in low-power standby. A 10mA average current draw typical of an ESP32 deep sleep duty cycle produces approximately 20 hours of runtime per charge from this cell. Higher average currents reduce that proportionally.

The 200mAh lithium polymer battery requires a single-cell LiPo charger terminating at 4.2V. The bare wire leads need connection to a charge circuit with a matching LiPo charge IC such as the TP4056 or MCP73831 solder the red positive lead and black negative lead to the battery input pads of the charge module. Never short the bare wire leads together and confirm polarity before soldering, as reversing connections on a LiPo damages both the cell and the charge circuit instantly. Available on StemVolt. This battery is working on miniature wearable and ultra-compact portable power projects.

Related Product:

• Checkout 3.7V 400mAh Lithium Polymer Battery

Features:

• LL-402030 compact pouch for ultra-compact enclosure
• Bare wire leads allow custom connector choice and direct PCB pad soldering
• 200mAh at 3.7V suits deep-sleep duty cycle microcontroller node power
• Single-cell LiPo charges to 4.2V with TP4056 and MCP73831 charge ICs
• 3.7V 200mAh lithium polymer battery with consistent LL-402030 dimensional specifications

Technical Specifications:

Applications:

• 3.7V 200mAh lithium polymer battery powers BLE beacon node in ultra-compact enclosure
• LiPo battery supplies ESP32 deep-sleep sensor node in miniature field deployment
• Lithium polymer battery 200mAh powers compact smartwatch prototype in slim wristband
• 200mAh battery runs hearing-aid sized audio circuit in miniature wearable
• Rechargeable lipo battery powers miniature GPS tracker module in compact asset tracking

Package Includes:

• 1 x 3.7V 200mAh Lithium Polymer Battery