ROCKSOLAR 14.6V/20A LiFePO4 Battery Charger
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ROCKSOLAR 14.6V/20A LiFePO4 Battery Charger
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What it is, and what it is for
ROCKSOLAR 14.6 V / 20 A LiFePO4 Battery Charger
A 20 A charger for any 12 V LiFePO4 battery, from a 10 Ah trolling or camera battery to a 100 Ah or 200 Ah house battery. It runs from 100 to 240 V AC and puts out 14.6 V at up to 20 A (292 W): a flat 100 Ah battery is full in about 5 to 6 hours and a 200 Ah in 10 to 12, which makes it the right charger for a house battery on shore power or a generator. Small batteries under 20 Ah are better on the 10 A charger.
The charger runs a lithium profile (constant current, then constant voltage at 14.6 V, then off), which a lead-acid or SLA charger cannot do: those either stop short of full or hold a float voltage that LiFePO4 does not want. If a battery has switched itself off on low voltage, the charger's BMS-restart function wakes it and charges it normally.
In the box: the charger with an AC cord, an AC-DC adapter and a male DC plug, which takes a ring-terminal or alligator-clip battery lead, so it connects to a bare battery or to one installed in a boat or RV. LEDs show power on, charging and full. Rated for 12 V LiFePO4 batteries only; do not use it on lead-acid or on a 24 V bank.
Every number, by component.
The figures the manufacturer publishes. The datasheet above is the reference if the two ever differ.
| Output | 14.6 V DC, 20 A (292 W) |
|---|---|
| Battery | 12 V LiFePO4 only |
| Input | 100–240 V AC, 47–63 Hz (90–264 V range) |
| Max. input current | 5 A at 100 V AC |
| Inrush current | ≤110 A at 230 V AC |
| Voltage accuracy | ±0.2 V |
| Efficiency | ≥90% at 230 V AC, full load |
| Power factor | ≥0.95 |
| Ripple and noise | ≤100 mV p-p |
| Protection | Reverse polarity, short circuit, over-voltage, over-current |
| Indication | Green: power on / full; red: charging |
| Cooling | Natural convection |
| Operating temperature | -10 °C to 45 °C |
| Storage temperature | -40 °C to 70 °C |
| Humidity | 5–95%, non-condensing |
| Altitude | Up to 2,000 m |
| Warranty | 1 year |
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