Know before you buy

• Not a buck/boost PSU

  A charge control and protection module only — it does not convert voltage.

• DC 6–30V · 30A max

  For 12V and 24V battery systems; relay rated 30A at 30V DC. Do not use above 30V DC.

• LCD live status

  Shows battery voltage, charge percentage, charging duration.

Features that make it useful

• Overcharge cut-off & auto charge control

  Cuts charging at your upper set voltage and restarts at your lower set voltage. It switches the charging path only.

• Set-and-forget thresholds

  Charging starts at preset low voltage and stops when full.

• Works with common battery types

  Lead-acid, lithium, gel and AGM — set voltages to suit your battery chemistry.

• Solar / inverter / DIY contexts

  Suits solar, inverter and DIY setups — it is a control module, not a full solar charge controller.

How to use

1. Check your system stays within 6–30V DC

   Use with 12V or 24V batteries only — never above 30V DC. Keep the charging current within the 30A max relay rating, with correct cable/fuse practice.

2. Set start/stop voltages for your chemistry

   Do not copy lithium settings onto lead-acid (or vice versa). Per-chemistry tables are not provided — use your battery maker's data.

3. Wire as a controller, not a converter

   Use a suitable upstream charger or source; this module controls and protects charging — it does not step voltage up or down.