MPPT Solar Charger Module CN3791 For 3.7V And 4.2V Lithium Batteries And 12V Solar Panels Compatible Easy Plug And Play Lithium Battery Charging No Fuss Setup High Efficiency Solar Power Management For Portable Projects

1× CN3791 MPPT Solar Charger Module for 3.7V Li-ion & 6V/12V PVs
✔️ 2A max charging, 4.2V±1% CV, -40°C to +85°C, JST PH2.0 auto recharge

The CN3791 MPPT Solar Charger Module is a compact power manager that extracts maximum energy from solar panels and safely charges a single 3.7V lithium-ion cell. It's ideal for portable solar projects, outdoor gear, and off-grid setups.

✅ MPPT control maximizes energy capture from 6V/12V panels while charging a 3.7V Li-ion cell
✅ Handles trickle, constant current, and constant voltage charging (4.2V±1%)
✅ Protective features: auto recharging, soft-start, overvoltage protection
✅ Easy hookup with 2-pin JST/PH2.0 connectors for quick setup

💡 What is an MPPT solar charger module used for in portable solar projects?

A handy device that optimizes solar energy conversion and battery charging in off-grid setups. - Maximizes energy transfer from panels to a 3.7V Li-ion cell - Provides trickle, constant current, and constant voltage charging - Includes safety features like overvoltage protection and soft start - Great for outdoor gear, camping rigs, and DIY solar builds