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Ideal for applications requiring different methods of battery charging, the AIMS 12V and 24V Converter/Battery Charger from the Inverter Store is suitable for many applications and battery technologies. This converter charges batteries including open lead acid, AGM, gel and LiFeP04. It’s particularly useful with generators and shore power.

The flexibility of this unit makes it practical for virtually any application. Its reliable high-frequency structure accepts a wide range of input voltages, from 70VAC to 145VAC, to handle unstable inputs. This charger automatically detects 12VDC or 24VDC battery banks for easy use. Its large, 75-amp charging capacity gets the job done fast. This is a great unit for RVs, boats, camping and many other purposes.

  • Large charging capacity design (75 Amp for 12Vdc; 37.5 Amp for 24Vdc) charges a 100 amp hour battery in under an hour up to 90% charge
  • Power supply up to 75 amps at 12Vdc or 37.5 amps at 24Vdc
  • Three stage smart charger with variable charging voltage algorithm for maximizing  battery life (bulk, absorb and float)
  • 4 pre-programmed charging algorithms using the dip switches for the most common charging profiles
  • Charges lead acid, AGM, GEL and LiFPO4 batteries
  • Adjustable charge current control dial to safely charge smaller battery (s)
  • Wide input voltage range, 70Vac to 145Vac for unstable inputs
  • Reverse polarity, over voltage, under voltage, over temperature, short circuit  protections
  • High AC to DC converting efficiency design  >80%
  • Always on fan for more efficient charging performance
  • Includes battery temperature sensor port to help maintain the life of the battery(s) (battery temperature sensor not included)
  • AC input cord – 4ft
  • Listed to UL 458 and CSA 22.2 NO. 107.1
  • 2 Year warranty


Battery Charger – 75 Amps for 12V and 24V

Input Voltage96-145VAC full performance | 70-96VAC automatically de-rate to 50% of full load current
Frequency40Hz to 70Hz
Nominal Input Current at Rated Output<9Aac
Voltage Measurement Accuracy±8Vac
Frequency Measurement Accuracy±1Hz
Nominal Voltage12/24Vdc auto adjusting | Input voltage 96-145V
Output Current75A for 12V mode | 37.5A for 24V mode
Low input voltage 70-96V derated at 50% of output. 37.5A for 12V  & 18.75A for 24V
Rated Output CurrentAuto sensing to 12V/24V
Current Accuracy± 6% of full rated output current @25°C, for target currents across the range from 10% rated output (for absorption exit criteria accuracy) to the current limit setpoint.
Load Regulation1.50%
Current Limit75-80Amp
Dead-Battery Charging8-14.9Vdc at 100% | 8-29.8Vdc at 100% of rated output current
Selectable Battery TypeOpen Lead-Acid, Gel, AGM, LiFePo4, adjustable
Parallel OutputsMaximum of two AC converter units connected in parallel
Input Over VoltageUnit is safe for input voltage up to 150VacRMS (and up to 215Vpeak). Above this level the damage may occur.
Reverse Battery Polarity ProtectionNon-destructive reverse battery polarity protection with fuses. Permanent damage will not occur and perform after fuse replacement.
Input Under-voltageNo permanent damage for input voltages from 0-300Vac. Shutdown or input current limit or other means may be applied when input voltage is out of normal operating range.
Output over voltage12Vdc. Unit will shut down if Vcharging > Vcharging (target) + 1.0Vdc for more than 2 seconds; unit will restart when voltage <= Vcharging (target) for more than 2 seconds.
24Vdc. Unit will shut down if Vcharging > Vcharging (target) + 1.5Vdc for more than 2 seconds; unit will restart when voltage <= Vcharging (target) for more than 2 seconds.
For battery OVP the unit will restart in the same stage.
Charger over temperature protectionThe internal temperatures of the charger will be measured by NTC. Based on these measurements, unit will shut down if the temperature exceeds 105°C. Unit will restart when environment temperature cools to 95 °C.
BTS(Battery Temperature Sensing)The battery temperature sensor allows the charge controller to continuously adjust charge voltage / charge current based on actual battery temperature.
When the battery temperature is over 40 °C, unit will reduce the charging voltage to Float voltage, also it will reduce the Max charging current by 10% with every two degree of temperature rise.
When the battery temperature is over 50 °C, unit will shut down.
Operation temperatureOperating Ambient Temperature range: -10°C to 40°C | Nominal ambient temperature: 25°C
(On the heat sink of DC-DC part, if the temperature is over 90 ℃, the Charger Current will be de-rate to 50% ; if the temperature is over 105 ℃, the Unit will be shut down.)
5~95% without condensation
NoiseUnit requirements: below 50dB (A) measured at 1 m distance with fan full working.
Storage Conditions Temperature-20°C to +80°C
CoolingThermal and load based fan
Dimension (D x W x H) mm10.25” * 6.75” * 3.25”
Unit Weight6.5 lb
Boxed Weight7 lb
Weight7 lbs
Dimensions10.25 × 7.75 × 3.25 in


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