SUNER POWER BC-50W-PB Ultra 50W 12V Solar Battery Charger
50 W 12 V solar charger with built-in MPPT controller, three selectable battery modes, charge-level indicators and full safety protections for vehicles, boats and RVs
- TypeSolar Battery Charger Ultra
- ColorBlack
- Dimensions0.16 in x 17.3 in x 23.2 in
- Weight2.563 kilograms
- Delivers up to 99% tracking efficiency with Ultra-Smart MPPT technology
- Charges 12V batteries through Bulk, Absorption and Float stages for longer life
- Automatically stops at full charge and resumes when discharged for maintenance-free operation
- Visual indicators show charge level at 25%, 50%, 75% and 100%
- Selectable 12V, 12V AGM and 12V Lithium modes suit flooded, gel, AGM, SLA, VRLA and LiFePO4 batteries
SUNER POWER 50W 12V Solar Battery Charger
This 50W 12V solar battery charger uses Ultra-Smart MPPT technology to maintain 12V batteries in cars, boats, RVs, trailers and powersports equipment. It supports flooded, gel, AGM, SLA, VRLA, maintenance-free and LiFePO4 lithium types. The unit is designed for trickle charging and long-term maintenance rather than rapid bulk recharge.
Plug-and-play SAE harness
Installation uses the included SAE-alligator clip, SAE-bare end and SAE-cigarette lighter cables for direct battery or accessory-port connection. Switch between 12V, 12V AGM and 12V Lithium modes to match the battery chemistry. The 0.16 in thin profile and 2.47 kg weight allow flexible placement, though the fixed 23.2 in by 17.3 in footprint requires a flat mounting surface.
MPPT tracking up to 99% with 98% peak conversion
Under sustained sunlight the controller delivers up to 99% tracking efficiency and 98% peak conversion, improving utilisation by roughly 20-30% over basic PWM units. The three-stage algorithm (bulk, absorption, float) stops automatically at full charge and resumes when voltage drops, while visual indicators show 25-50-75-100% status. Built-in protections guard against over-charge, over-discharge, over-voltage, over-current, over-load, short circuit, reverse polarity and over-temperature.
Highlights
- Delivers up to 99% tracking efficiency with Ultra-Smart MPPT technology
- Charges 12V batteries through Bulk, Absorption and Float stages for longer life
- Automatically stops at full charge and resumes when discharged for maintenance-free operation
- Visual indicators show charge level at 25%, 50%, 75% and 100%
- Selectable 12V, 12V AGM and 12V Lithium modes suit flooded, gel, AGM, SLA, VRLA and LiFePO4 batteries
Specifications
| Brand | SUNER POWER |
|---|---|
| Model | Solar Battery Charger Ultra |
| Type | Solar Battery Charger Ultra |
| Color | Black |
| Dimensions | 0.16 in x 17.3 in x 23.2 in |
| Weight | 2.563 kilograms |
Questions about this item
How do I know the MPPT controller is tracking at 99% efficiency after I connect it?
The visual indicators show four charge levels at 25%, 50%, 75% and 100%; when the battery reaches full charge the unit stops and automatically resumes when voltage drops, confirming the MPPT algorithm is active.
What cables come in the box and which connection types still need a separate purchase?
Included are an SAE-to-alligator clip cable, an SAE-to-bare-end cable and an SAE-to-cigarette lighter cable; any other connector style such as ring terminals or Anderson plugs would need to be sourced separately.
Which selectable mode should I choose for a 12V LiFePO4 battery versus a standard flooded lead-acid battery?
Use the 12V Lithium setting for LiFePO4 and the 12V setting for flooded, gel, AGM, SLA, VRLA or maintenance-free lead-acid batteries; the 12V AGM mode is optimised for AGM chemistry.
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