| Select Product | With Shell Case |
|---|---|
| Brand | Unbranded |
| Current Conversion | DC to DC |
| Type | Controller Module |
| Marke | Markenlos |
Check the listing for details. DC 6-60V Solar Battery Charger Controller Module Current Protection Board. Condition: New. Listed at 6.39 USD. Relay Module. It can turn on and off the output by relay. It only plays a switching role. A2: This is because your charging current is too large or the battery capacity is too small. The relay is disconnected.