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Five small black plastic rectangular circuit boards 10 by 5 by 2.03 cm

Meterk Solar Charge Controller 5PCS 10cm x 5cm x 2.03cm Black

SKU CH-AD32-B4RXQ

A pack of five solar charge controllers that auto-switch lights on at dusk and off at dawn for lithium or LiFePO4 batteries

  • TypePush Buttons
  • Housing MaterialPlastic
  • Mounting StyleUniversal
  • Size/Dimensions10 cm x 5 cm x 2.03 cm
  • MaterialPlastic
  • Color/FinishBlack
  • Auto light control activates at dusk and dawn
  • Voltage detection replaces separate photosensitive sensors
  • Supports lithium and LiFePO4 batteries from 3.6 V to 16.8 V
  • Solar input range 4.5 V to 28 V DC
  • Five compact modules each 10 cm by 5 cm by 2.03 cm

Solar Charge Controller Kit

This pack contains five identical Meterk solar charge controllers built for small off-grid lighting projects. Each module handles automatic dusk-to-dawn switching by monitoring solar-panel voltage, removing the need for a separate light sensor. The boards suit DIY garden, lawn, pathway and street-light builds where a compact, ready-to-wire solution is preferred.

Thermal and Power Behaviour

The controller operates passively with no fan, so it adds no audible noise to the installation. Power draw is limited to the charging current supplied by the connected panel, with a maximum input range of 4.5V to 28V DC and a 2A current ceiling. Heat dissipation relies on the plastic housing and the mounting surface, making airflow around the 10 cm by 5 cm board the only thermal consideration.

Battery Voltage Compatibility

The single specification that decides fit is the battery chemistry and cell count the board supports. Lithium-ion packs from 3.6V to 16.8V (1S to 4S) and LiFePO4 packs from 3.2V to 12.8V (1S to 4S) are accepted, but only when the solar input voltage and wattage match the narrow bands listed for each cell count. Buyers needing other chemistries, higher voltages or different cell configurations cannot use these modules.

Highlights

  • Auto light control activates at dusk and dawn
  • Voltage detection replaces separate photosensitive sensors
  • Supports lithium and LiFePO4 batteries from 3.6 V to 16.8 V
  • Solar input range 4.5 V to 28 V DC
  • Five compact modules each 10 cm by 5 cm by 2.03 cm

Specifications

TypePush Buttons
BrandMeterk
Housing MaterialPlastic
Mounting StyleUniversal
Size/Dimensions10 cm x 5 cm x 2.03 cm
MaterialPlastic
Color/FinishBlack
Compatibility/FitmentOut-Opening, Narrow Stile, Store Front Doors
Part NumberMod-A2-005

Questions about this item

How do I mount the 10 cm × 5 cm plastic housing and which wiring step is most often missed?

The universal-mount plastic case has no pre-drilled holes; secure it with screws or double-sided tape, then connect solar input (4.5 V–28 V DC), battery with its protection board, and LED load — the step most often missed is fitting the battery protection board before powering up.

What ongoing maintenance will the five controllers need?

Inspect the solar-panel-to-battery voltage match each season, verify the protection board remains seated, and clean dust from the plastic housing so the auto light-control circuit can still detect panel voltage changes at dusk and dawn.

What limit appears first when the module runs continuously at the 2 A charge current?

Thermal rise in the 10 cm × 5 cm × 2.03 cm plastic enclosure is the first limit; sustained 2 A charging at up to 28 V input will warm the housing, so ensure airflow around each unit.

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