Mastervolt ChargeMaster 24/20-3
The Mastervolt ChargeMaster 24/20-3 is a battery charger with dimensions of 291 x 210 x 131 mm, a weight of 4 kg (8.8 lb), a supply of 120/230 V (90-265 V), 50/60 Hz and an ingress rating of IP23.
Last updated: 31 October 2026
Battery and charging
- Input voltage
- 120/230 V (90-265 V), 50/60 Hz
- Charger output voltage
- Sources disagree
28.8 V
“Total charge current 6 A at 28.5 V 12 A at 26.5 V 20 A at 28.8 V”
Source: media1.svb-marine.es/media/snr/503831/pdf/brochure_en_2014-01-10.pdf
24 V
“Nominal output voltage 24 V”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
- Charger output current
- Sources disagree
20 A at 28.8 V
“Total charge current 6 A at 28.5 V 12 A at 26.5 V 20 A at 28.8 V”
Source: media1.svb-marine.es/media/snr/503831/pdf/brochure_en_2014-01-10.pdf
20 A
“Total charge current 20 A at 28.8 V”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
“Nominal input voltage 120/230 V (90-265 V), 50/60 Hz”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
Battery care and safety
- Ingress protection
- IP23
- Temperatures it works in
- -25 °C to 60 °C, derating 40
“Protection degree IP23 Protections over temperature, over load, short circuit, high/low battery voltage”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
“Temperature range (ambient temp.) -25 °C to 60 °C, derating 40”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
Size and fit
- Weight
- 4 kg
- Weight
- 8.8 lb
- Overall dimensions
- 291 x 210 x 131 mm
Row from the maker’s page: “Weight” | “4 kg 8.8 lb”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
Row from the maker’s page: “Weight” | “4 kg 8.8 lb”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
“Dimensions, hxwxd 291 x 210 x 131 mm 11.5 x 8.3 x 5.2 inch”
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
Sources
- Archived document
Source: media1.svb-marine.es/media/snr/503831/pdf/brochure_en_2014-01-10.pdf
Retrieved October 14, 2026
- Chargemaster 24/20-3 | Battery chargers | Mastervolt .Archived document
Source: mastervolt.com/products/battery-chargers/chargemaster-24-20-3
Retrieved October 31, 2026