Mass battery chargers sine wave inverters and DC-DC converters are designed for the toughest conditions for professional semi-professional and recreational purposes. Even under the most extreme conditions the products from the Mass series operate faultlessly giving you round-the-clock output when necessary. The sustainability and technologies that underpin the Mass concept have long been proven in practice. With an MTBF of 280000 hours at full capacity and 24/7 use the Mass products are ideal for the toughest tasks and any situation that requires a reliable power supply. You can always rely on their proven and technically advanced components.

Making the best even better

The reliability and long lifespan of Mastervolt s battery chargers sine wave inverters and DC-DC converters have been established beyond doubt over the past decade. While the Mass products have evolved with the latest technological developments the dimensions and connections have remained the same. As a result it is exceptionally easy to replace one unit with another with only negligible downtime.

Mastervolt Green by Heart

As part of our constant search for eco-friendly and long-lasting solutions Mastervolt has developed the Green by Heart programme. Its impact on the Mass battery chargers Mass Sine inverters and Mac & Magic DC-DC converters include:

• An exceptionally effective use of the consumed input current (cos phi) > 0.98!
• Faster charging of batteries even when the input current is limited.
• Use of top quality components with a long lifespan.
• Savings in weight and space.
• Fewer installation materials.
• Product Specifications | Download

	General specifications		General specifications
	Nom. output voltage	24 V
	Total charge current	25 A
	Number of battery outlets	2
	Charge current second output	3 A
	Battery capacity range	50-250 Ah
	Nominal input voltage	230 V (180-265 V) 50/60 Hz
	Supplies your system without battery	yes
	Display/read-out	LED display
	Dimensions hxwxd	325 x 220 x 111 mm 12.8 x 8.7 x 4.4 inch
	Weight	3.3 kg 7.3 lb
	Approvals	CE ABYC A-31 RRR RS
	Technical specifications		Technical specifications
	Charge characteristic	IUoUo automatic 3-step+ for gel/AGM/wet/Lithium Ion
	Charge voltage Bulk	28.5 V
	Charge voltage Absorption	28.5 V
	Absorption time	4 hours
	Charge voltage Float (wet batteries)	26.5 V
	Charge voltage Float (gel/AGM batteries)	27.6 V
	Temperature compensation	- 60 mV/ C 0 mV/ F
	Voltage compensation	voltage drop compensation in DC cables up to 3 V
	Power consumption (DC side)	< 1 mA
	Full load consumption (230 V AC)	880 W
	Power factor control	> 0.95
	Temperature range (ambient temp.)	-25 C to 80 C derating > 45 C -13 to 176 F
	Cooling	vario fan
	Sound level	< 48 dBA at 1 mtr
	Protection degree	IP23
	Protections	over temperature over load short circuit high battery low battery
	MasterBus compatible	yes
	CSI/DC alarm	integrated in the battery charger as standard