Mastervolt
Mastervolt Charge Mate Pro 90 Split Charge Relay (12V / 24V / 90A)
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Mastervolt Charge Mate Pro 90 is a current-limited electronic charge relay that distributes charger or alternator current between two battery banks, such as a starter and a service battery. It connects the batteries during charging and keeps them isolated when discharging, greatly reducing the risk of a flat starter battery.
Unlike a mechanical relay, the Charge Mate Pro limits the charge current to the second battery to 90 A, so the primary battery is always charged with priority. It is unidirectional and blocks the return current under all circumstances, even when the secondary battery sits at a higher voltage, which also prevents power dips on the onboard network. The higher 90 A rating gives a faster charge, for example when charging lithium-ion batteries, and suits large automotive alternators up to 180 A. It can run in parallel with a 225 A alternator for even higher continuous power demand.
The unit suits charging from AGM or GEL starter batteries to AGM, GEL or lithium service batteries, has a very low voltage drop of max 0.2 V and LED status indication. The IP65 electronics sit in a corrosion-resistant casing with aluminium heat sinks. An optional bypass switch enables an emergency start function. For a lithium starter battery, use part 83309004.
PRODUCT DETAILS
- Electronic charge relay with very low voltage drop (max 0.2 V)
- Secondary battery charge current limited to 90 A
- Prioritised charging of the main battery
- Unidirectional, blocks return current under all circumstances
- Suitable for large alternators up to 180 A; parallel with 225 A alternator
- Ideal for fast charging of lithium-ion batteries
- Automatic 12/24 V detection, parallel configuration possible
- LED status indication, IP65 corrosion-resistant casing
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General
| Output current limited to | 90 A; > 25 C derating power |
| Number of battery outlets | 2 |
| Input voltage range | 9-32 V |
| Battery voltage | Automatic 12/24 V detection |
| Parallel configuration | Yes |
| Monitoring | LED (warnings and status indication) |
| Remote switch functions | on, off, auto, start assist |
| Compliance | CE |
Technical
| Battery types | Suitable for charging from AGM/GEL starter batteries to all types of batteries (for lithium starter battery applications use 83309004) |
| Power consumption | Switch open: < 1 mA at 12/24 V DC |
| Switch on voltage | 13.5 V (12 V) / 27 V (24 V) |
| Switch on delay | 5 sec |
| Switch off voltage | 12.75 V (12 V) / 25.5 V (24 V) |
| Switch off delay | 2.5 sec |
| Relay | Electronic (MOSFETs with low voltage drop of max 0.2 V) |
| Temperature range (ambient) | -40 C to 60 C |
| Protection degree | IP65 |
Physical
| Dimensions (HxWxD) | 157 x 140 x 80 mm |
| Weight | 0.88 kg |
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