The Mastervolt Battery Mate 2503IG Battery Isolator is an intelligent, 3-battery charging solution designed for marine and automotive systems. It keeps two or three batteries charging to their full potential with minimal voltage drop, even when different brands or voltages are used.
-
Number of battery outlets: 3 independent outlets for two or three batteries in 12V or 24V systems
-
MOSFET technology: Active compensation minimizes voltage drop and maintains correct charging voltage across all battery banks
-
Compatibility: Works with any alternator or charger; ideal for mixed-brand setups
-
Max outputs: 200 A maximum output for battery chargers; 250 A maximum output for alternators
-
Construction: Corrosion-proof design with aluminium heat sinks and synthetic end plates for harsh environments
-
Installation: Easy to install with connection lugs, solid bolt connections, nuts, and locking rings
-
Status indicator: Clear LED display shows when power input is active for quick diagnostics
-
Physical specifications: Dimensions 8.1 x 5.5 x 3.1 inches; Weight 2.2 lb
By actively balancing charging across multiple batteries, Battery Mate reduces the need to tweak voltage settings and speeds up charging, delivering reliable performance whether you’re running a dual- or multi-battery setup on a boat or vehicle. It supports 12V and 24V systems and handles mixed-brand configurations, making it a practical upgrade for demanding power needs where dependable charging across several banks matters most.
| Number of battery outlets |
3 |
| Dimensions, hxwxd |
8.1 x 5.5 x 3.1 inch |
| Weight |
2.2 lb |
| Max. output battery charger |
200 a |
| Max. output alternator |
250 a |
