I was a little skeptical at first, but went ahead with the purchase based on reviews. After unpacking the item, I was impressed. The enclosure is larger than I expected, but very well built and sealed. The leads are large guage wire and well-insulated. Although description states "on board" charger, the manual cautions against charging when in the vehicle without disconnecting ground lead. I did a bench test where i purposely used a bit of one battery and left the other fully charged. Then connected leads with the two negatives hooked together. As i expected, the charger separately sensed and properly maintained each battery independently.
I also very much liked the fact that the charger includes an electronic relay for charge output - this means when charger is de-energized (not plugged in to AC), there is no connection to the charger circuits. For protection of both charger and alternator, do not attempt to leave the charger plugged in while vehicle is in operation -- although there are protection mechanisms built in and it is very unlikely to cause damage, it is not recommended.
This charger is now installed in my truck which has a dual battery system (isolated by a solenoid). The truck sits unused most of the time, but now, i don't have to worry about having a dead battery when I need to use it. I've also found that the vehicle's charging system doesn't necessarily do a good job at managing the dual batteries; the alternator charges the two batteries as if they were one thus the primary battery tends to not be fully charged and thus slowly, over time, the primary battery has degraded performance. With this charger, now the primary and secondary batteries are independently maintained and thus both are kept at optimal performance.
| Manufacturer | NOCO |
|---|---|
| Brand | NOCO |
| Model | GENM2 |
| Item Weight | 5.8 pounds |
| Product Dimensions | 7.9 x 2.2 x 5.5 inches |
| Item model number | GENM2 |
| Is Discontinued By Manufacturer | No |
| Exterior | Brushed |
| Manufacturer Part Number | GENM2 |
| Lift Type | 12v |
| Voltage | 12 Volts |
