DC Multifunction Battery Monitor 0-200V 300A LCD
$32
Key Specs
| max-current | 300A |
| voltage-range | 0-200V |
| connection | Wired LCD |
| weight | 0.6 lbs |
| cable-length | 12 ft |
| warranty | 1 year |
Pros
- ✓ Wide 0-200V range compatible with 12V through 96V systems
- ✓ Clear backlit LCD with multiple simultaneous readouts
- ✓ Affordable complete kit including 300A shunt
- ✓ Easy panel-mount installation
Cons
- ✗ No data logging or wireless connectivity
- ✗ Requires calibration for accurate SOC tracking
Detailed Review
Overview
The DC Multifunction Battery Monitor with 300A shunt is a wired LCD monitor designed for builders who want accurate battery data without the complexity or cost of a Bluetooth system. Covering 0-200V and 300A, it suits everything from compact 12V camper vans to larger 48V solar storage installations. The unit ships as a complete kit — shunt, display, and connection harness — so you can go from unboxing to live readings in under an hour.
How It Works
A 300A copper shunt threads into the negative battery cable. The monitor’s display unit connects to the shunt via a multi-wire harness and reads the current-proportional millivolt drop across it. A separate voltage sense lead taps directly to the battery positive terminal. Combining these two measurements, the processor calculates instantaneous power (watts), cumulative energy (watt-hours), amp-hours consumed, and state of charge as a percentage derived from your user-programmed battery capacity.
Key Features
The backlit LCD panel shows voltage, current, power, and SOC simultaneously on a segmented display that is readable in both indoor and outdoor light. The 0-200V range allows installation on unconventional battery configurations that most standard monitors can’t handle — including high-voltage lithium packs assembled from series cells. An integrated alarm buzzer can alert you when voltage drops below a programmable threshold.
Installation uses a standard rectangular panel cutout, with the display head fitting into a dashboard, cabinet, or wall-mount enclosure. The 12-foot harness accommodates typical installations where the battery is a moderate distance from the display location. The face is sealed to prevent moisture intrusion from the monitored side.
Who It’s For
This monitor is best suited to fixed installations in RVs, boats, tiny homes, and off-grid sheds where a permanent wall-mounted display is preferable to a phone screen. It offers more capacity than the 100A version of the same family — useful if you have multiple loads or a large inverter — while remaining budget-friendly. Users who need wireless access, historical data logging, or integration with other smart devices should consider stepping up to a Victron SmartShunt or one of the color-screen monitors.
