G300
300W desktop battery chargers with charging outputs from 12.6V/18A to 58.8V/5A.
300W.
No fan. No noise.
The G300 is a 300W desktop battery charger with 4-stage (Li-ion) and 3-stage (lead-acid) charging curves for Li-ion, LiFePO4 and lead-acid packs. Fourteen models span 12.6V/18A to 58.8V/5A, with a five-level LED capacity indicator, active PFC and fanless natural-convection cooling.
No fan.
Nothing to wear out.
300W desktop battery chargers with charging outputs from 12.6V/18A to 58.8V/5A — and it does it without a fan. At 94–95% efficiency there is little heat left to shed, so natural convection is enough: no airflow to draw dust in, no bearing to fail, nothing to hear on a bench. 220 x 105 x 43mm, 1.3Kg.
95% typical.
Less waste.
The G300 holds 94–95% efficiency across its range, so little of the input is lost as heat — which matters more here than on a fan-cooled unit, since the G300 sheds heat by natural convection alone. An active PFC front end keeps power factor above 0.98 at 115VAC and above 0.94 at 230VAC at full load, and the 90–264VAC input covers every mains.
Right curve.
Every pack.
Pre-charge → constant current → constant voltage → shut-off. GREEN's charging curve keeps cells safe through every phase of the charge.
Guarded cells.
Peace of mind.
Layered protection guards the connected equipment behind it. Industrial-grade components handle vibration, humidity and temperature swings.
- Short circuit
- Over voltage
- Battery over-voltage
- Reverse polarity
- Over temperature
Every detail,
spelled out.
- Input Range
- AC 90~264V 50/60Hz 4.5A
- Output Range
- 12.6V/18A to 58.8V/5A — 14 models across Li-ion, LiFePO4 and lead-acid
- Efficiency
- 94–95% @230V full load (varies by model)
- Power Factor
- PF > 0.98 @115VAC · PF > 0.94 @230VAC (full load)
- Charging Profile
- Pre-charge → CC → CV → cut-off (4-stage lithium / 3-stage lead-acid)
- Supported Batteries
- Li-ion, LiFePO4, lithium manganese, lead-acid (gel, AGM, VRLA)
- LED Indicator
- Five-level capacity display — green flicker at 0.45/0.83/1.25/1.66/2.5Hz, solid when full, red flicker on error
- Output Protection
- Short circuit · Over voltage · Battery over-voltage · Reverse polarity
- Cooling
- Natural convection — no fan
- Standby Power
- < 1W
- Dimensions & Weight
- 220 x 105 x 43mm / 1.3Kg
- Operating Temperature
- -10 ~ +40°C (see derating curve)
Need it customized?
Tell us your voltage, current and connector — we'll tune the G300 or build a fresh power stage around your spec.