MakerFocus 4x 3.7V 3000mAh LiPo Batteries with Protection Board for ESP32 Mesh Node

Powerful, compact LiPo power for ESP32 and IoT projects

This MakerFocus kit brings four 3.7V 3000mAh LiPo cells with an integrated protection board, a JST 1.25 plug, and insulated rubber tape. Designed for compact ESP32 development boards and mesh nodes, the pack delivers reliable energy while keeping setup tidy and safe. Each cell contributes energy in a compact footprint, making it easy to power mobile prototypes, remote sensors, or hobbyist IoT projects.

Protection and safety features

The built-in protection board is designed to manage charging and discharging, helping to reduce risk during use. It includes several safeguards to help prevent common risks in daily tinkering, while keeping the focus on practical, hands-on experiments.

• Overcharge protection: the board automatically powers off when the battery reaches 4.2V, stopping further charging.
• Over-discharge protection: the board cuts power near 3.0V to prevent deep discharge.
• Short circuit protection: in the unlikely event of a fault, the protection circuit responds within milliseconds.
• Note on overcurrent: avoid pushing current beyond recommended limits to prevent protection board damage.

Charging, discharging and performance guidelines

Key operating parameters are provided to help you plan safe, repeatable use in your projects. The cells are rated for nominal 3.7V with a 4.2V charge cut-off and 3.0V discharge cut-off. Typical capacity is 3000mAh per cell, with energy roughly 11.1Wh per cell. The standard charging method involves an initial constant current followed by a constant voltage stage until the charge current drops.

• Charge current: 0.2C is typical; do not exceed 0.5C or the stated maximum of 1.5A for charging or discharging.
• Discharge current: max 0.5C; avoid sustained high drains that can reduce performance or heat the pack.
• Temperature ranges: charging is specified between 0 and 15 C (with limits), and 15 to 45 C for regular use; discharge operates from -10 to 60 C.

Storage and care

For best longevity, store the batteries in a cool, dry, well-ventilated place away from heat sources. Maintain a storage state around 30 to 50 percent capacity, with a voltage around 3.7 to 3.9V. If storage exceeds six months, plan a periodic recharge. Always keep the pack within recommended temperature and humidity ranges when not in use.

Real-world use and what you get

Whether you are powering an ESP32 development board, a small mesh node, or portable sensors, this 4 pack provides dependable energy with built-in safeguards. The package includes insulated tape for safe handling and a JST 1.25 plug for quick, compatible connections.

• 4 x 11.1Wh 3000mAh 3.7V LiPo rechargeable batteries
• Integrated protection board with overcharge, over-discharge, and short-circuit safeguards
• Insulated rubber tape for safe storage and handling
• JST 1.25 plug for ESP32 compatibility

Note: While the protection features enhance safety, always follow general battery care guidelines and never expose cells to heat, moisture, or mechanical damage.