When to choose a 48V inverter?

A 48V inverter is the ideal choice when your off-grid installation requires continuous power and several loads operating simultaneously (refrigerator, pumps, light tools, occasional air conditioning). By operating at 48 V DC, the current is halved compared to 24 V and reduced to a quarter compared to 12 V for the same power, minimizing losses and allowing for more reasonable cable sizes.

Advantages of 48V

• Higher efficiency in the DC section due to lower currents.
• Higher sustained power without requiring oversized conductors.
• Better scalability of the battery bank to increase autonomy.

Typical applications

• Off-grid homes with daily consumption and several kW of demand.
• Small businesses/workshops with continuous loads and start-up peaks.
• Installations with 48V lithium batteries (LV) or sized stationary banks.

Key selection criteria

• Nominal and peak power: calculate simultaneity and start-up loads (compressors, pumps, tools).
• Pure sine wave and high efficiency at partial load.
• Integrated functions:
  • Need to charge from grid/generator? → inverter with 48V charger.
  • Need to connect panels directly? → inverter with charger + MPPT or with MPPT.
• Protections (low voltage, overload, temperature) and communications (RS485/CAN, Wi-Fi, app).
• Installation: proper ventilation, accessibility to fuses/disconnectors, and correct grounding.

General specifications

Best practices

• Install DC fuses close to the battery and properly sized disconnectors.
• Use busbars for clean distribution and balanced battery bank connections.
• Configure battery type and charge/discharge thresholds according to the technology (AGM, GEL, OPzS, Lithium).

If your off-grid system requires continuous power and efficiency, a 48V inverter will provide you with margin, stability, and more contained cabling. Also consider the versions with charger and with integrated MPPT to simplify installation.