power queen 500A Battery Monitor with Shunt
Quick take
The power queen 500A Battery Monitor with Shunt is an in-system monitor that shows battery voltage and current flow using a shunt, plus an LCD for at-a-glance data. It also includes programmable high and low voltage alarms to help prevent over-voltage or under-voltage situations. It looks best for RV, camper, and overland battery banks where you are comfortable with a semi-permanent installation and want more actionable monitoring than a basic voltmeter.
Pros and cons
Pros
- Real-time monitoring of voltage and current flow (measurement types: volts, amps) with an LCD display.
- Programmable high and low voltage alarms to alert you when levels go outside set thresholds.
- Wide battery compatibility spanning 8V to 120V and multiple battery types (LiFePO4, gel, SLA, and flooded).
- Includes a 20ft shielded wire for more flexible placement in vehicles or battery compartments.
Cons
- Buyer feedback suggests it is intended more for fixed, permanent-style installation, which may not suit fully portable setups.
What buyers think
Buyer-review evidence is limited to a small number of short snippets, but the recurring theme is that the monitor “works as stated” for in-vehicle and RV battery monitoring. Feedback highlights that it is straightforward to use for day-to-day battery checks, and that it can be used effectively to monitor a battery bank. The overall pattern is positive functionality, with only minor caveats appearing around installation intent (more permanent than portable) and occasional missing accessories.
What this battery monitor is for
This is a shunt-based battery monitor meant to be integrated into an existing battery system so you can watch voltage and current flow. If you run an RV, van build, camper, or off-grid setup, the main value is having more immediate insight into how your battery bank is behaving, especially when you want alerts if voltage trends too high or too low. The monitor also targets battery management concerns like tracking state-of-charge-related information and charge or discharge behavior, which can help you make better decisions about usage and charging.
Key features that matter day to day
Voltage and current monitoring with an LCD
The device measures both volts and amps and uses an LCD for visibility. That combination is useful because voltage alone can be misleading under load, while seeing current alongside voltage gives you a clearer picture of what your system is doing.
Programmable high and low voltage alarms
Instead of simply observing numbers, you can set voltage thresholds and receive alerts if the battery voltage goes above or below your chosen limits. This is particularly relevant for preventing conditions that can reduce battery life or create reliability issues when charging or drawing power for extended periods.
Compatibility across battery chemistries and system voltages
The monitor is designed for systems from 8V to 120V and supports lithium (including LiFePO4), sealed lead acid (SLA), gel, and flooded battery types. If you have a mixed set of components across an overland or RV build, this broad compatibility can make it easier to match the monitor to your battery chemistry and system voltage without switching monitors.
Installation flexibility with shielded 20ft wire
The included 20ft shielded wire can help with routing from the monitor location to the battery/shunt area. Longer runs can matter in vehicles where you want the display somewhere readable while keeping wiring organized and protected.
Pros and cons in plain terms
Pros
- Clear, at-a-glance readout for voltage and current.
- Alarm thresholds make it easier to catch out-of-range battery conditions early.
- Broad battery and system compatibility (8V-120V, plus multiple battery chemistries).
- Includes a shielded wire long enough for typical vehicle or compartment layouts.
Cons
- Best suited for fixed installations, so it may feel like overkill for someone who wants a truly portable “plug-and-go” monitor.
- Occasional accessory issues are possible, so do a quick parts check when you unbox before committing to mounting.
Who should buy it
- RV, van, camper, and overland owners who want more than basic voltage checking and want to observe current flow too.
- Anyone managing LiFePO4, gel, SLA, or flooded battery systems and looking for a monitor that supports their chemistry and system voltage.
- Users who like the idea of programmable high/low voltage alerts to reduce the risk of accidentally running into out-of-range conditions.
Who should skip it
- If you need a portable, temporary meter you can move between setups easily, this may not align with your workflow.
- If you only care about raw voltage and do not need current measurement or alarm thresholds, you may find simpler options more cost-effective.
Price and availability
Check the latest price and stock status on Amazon here: Buy on Amazon. Pricing can change, and availability may vary by seller and region.
FAQ
Does the power queen 500A Battery Monitor with Shunt measure both voltage and current?
Yes. It measures voltage and current flow (measurement types listed as volts and amps) and displays the information on an LCD.
What battery types and system voltages does it support?
It’s designed for 8V to 120V systems and is compatible with lithium (including LiFePO4), sealed lead acid (SLA), gel, and flooded batteries.
Is it good for RV and camper battery banks?
It’s commonly used for vehicle and RV-style monitoring because it provides an LCD readout and voltage alarm thresholds. Buyer feedback also indicates it works well for monitoring an RV battery bank.
Does it include alarms, or is it only a readout?
It includes programmable high and low voltage alarms that notify you when battery voltage moves outside your chosen thresholds.
How portable is the installation?
Review snippets suggest it is intended more for a permanent-style setup rather than a fully portable meter you swap around frequently. If you need a portable device, consider your mounting and wiring tolerance before buying.
Specifications
| Product Title | power queen 500A Battery Monitor with Shunt | Programmable Alarm | 8V-120V Voltage Range | LCD Display | 20ft Shielded Wire | Compatible with 12V Lithium, LiFePO4, Gel, Flooded Batteries |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Testers |
| Brand | power queen |
| Manufacturer | Power Queen |
| Color | Black |
| Item Weight | 1.4 Pounds |
| Power Source | Corded Electric |
| Minimum Operating Voltage | 8 Volts |
| Measurement Type | Volts, Amps |
| Brand Name | power queen |
| Model | 836a9d97-62f9-47da-8c96-d4d6e260c3e6 |
| Part Number | P-MONITOR500A-B |
| Unit Count | 1.0 Count |
| Min. Operating Voltage | 8 Volts |
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