The Mastervolt Mass Combi Ultra 24/3500-100 (230 V) is an inverter with a 24 V system, a weight of 15.3 kg 33.7 lb, 100 A at 28.5 V, adjustable of charging current and an ingress rating of IP23 (vertical mounting).
Last updated: 8 October 2026
At a glance
What this device draws
- System voltage
- 24 V (19-32 V)
- Continuous draw
- Mastervolt publish no DC input current for this model
“Nominal DC voltage 24 V (19-32 V)”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Continuous power at 40 °C / 104 °F, cos phi 1 3500 W”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
Battery and charging
- What it draws on standby
- 26 W / 4 W / 0 W
- Output current
- 100 A at 28.5 V, adjustable
“No-load power consumption on DC (ON/inverter OFF/OFF) 26 W / 4 W / 0 W”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Max. charge current at 40 °C / 104 °F 100 A at 28.5 V, adjustable”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
Battery care and safety
- Operating temperature range
- -25 °C to 60 °C, derating > 40
- Ingress protection
- IP23 (vertical mounting)
“Temperature range (ambient temp.) -25 °C to 60 °C, derating > 40”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Protection degree IP23 (vertical mounting)”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
Size and fit
- Overall dimensions
- 472 x 318 x 178 mm 18.6 x 12.5 x 7.0 inch
- Stated weight
- 15.3 kg 33.7 lb
“Dimensions, hxwxd 472 x 318 x 178 mm 18.6 x 12.5 x 7.0 inch”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Weight 15.3 kg 33.7 lb”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
Other findings
- Charge characteristic
- IUoUo, automatic / 3-step+ for Gel/AGM/MLI/ flooded/spiral/traction
- Max continuous power
- 3500 W
- Recommended battery capacity
- ~ 200-600 Ah (based on gel batteries, may differ for other types)
- Surge power
- 7000 W
“Charge characteristic IUoUo, automatic / 3-step+ for Gel/AGM/MLI/ flooded/spiral/traction”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Continuous power at 40 °C / 104 °F, cos phi 1 3500 W”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Recommended battery capacity ~ 200-600 Ah (based on gel batteries, may differ for other types)”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
“Max. peak load 7000 W”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v
Certification claims
- Product compliance claim
- CE, E-mark, ABYC, RMRS
“Compliance CE, E-mark, ABYC, RMRS”
Source: mastervolt.com/products/mass-combi-ultra/mass-combi-ultra-24-3500-100-230-v