This is a state-of-charge (SOC) meter accessory built for the BigBattery EAGLE 2 lineup. It is not a battery — it's a display and communication module that shows charge status and connects to your EAGLE 2 battery's communication port.
Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Why This Matters
A dedicated SOC meter takes the guesswork out of managing an EAGLE 2 battery bank. Instead of estimating charge level from voltage alone — which is unreliable under load — this meter reads the battery's internal communication data and displays actual state of charge along with real-time charging status. That distinction matters: voltage sag under load can make a battery look emptier than it is, and a comms-based reading avoids that error.
The shielded connector is a detail worth noting. Off-grid and mobile installations often run wiring near inverters, motors, or other sources of electrical noise. A shielded connector reduces the risk of signal interference corrupting the communication link between the meter and the battery.
Product Characteristics
- Product Type: SOC Meter / Communication Display Accessory
- Compatible With: 24V, 36V, and 48V EAGLE 2 batteries
- Connector: Shielded connector
- Display Functions: Charge display, comms display
Wiring & Configuration Limits
This meter is designed to communicate with a single EAGLE 2 battery system's comms port. It is not a battery and does not factor into series/parallel voltage or capacity calculations for your bank. Follow the wiring diagram provided with your EAGLE 2 battery for correct comms port connection.
NOT compatible with: BigBattery products outside the EAGLE 2 family, unless separately confirmed [NEEDS VERIFICATION]. Do not attempt to connect this meter to a battery without a matching comms port — connector shape and pin-out are not universal across all lithium battery brands.
Pro-Installer Tip
Loose or corroded comms connectors are a common source of "ghost" SOC readings — a meter that freezes on a stale percentage or drops out entirely. Over time, this can mask a real problem, like a cell group drifting out of balance inside the battery, because the display keeps showing an outdated number instead of the actual pack condition. Before final mounting, seat the shielded connector fully and check for a positive click or firm resistance, then verify the reading updates in real time as you apply or remove a load. For ongoing verification, pair the SOC meter's reading against a clamp-on shunt-based battery monitor at least once during commissioning — this cross-check confirms the comms data lines up with actual current flow. Treat any static or unchanging SOC reading as a wiring fault to investigate immediately, not a battery fault to work around.
Key Benefits
- Real-time state-of-charge visibility sourced from battery communication data, not voltage guesswork
- Dedicated charge display separate from comms status, so you can see charging activity at a glance
- Shielded connector reduces interference risk in electrically noisy installations
- Purpose-built for the EAGLE 2 platform across all three supported voltages (24V/36V/48V)
Technical Table
| Spec | Value |
|---|---|
| Product | EAGLE 2 COMM SOC Meter |
| SKU | MTR107 |
| Compatible Voltages | 24V / 36V / 48V (EAGLE 2 only) |
| Connector | Shielded Connector |
| Display Features | Charge Display, Comms Display |
| Price | $35.00 |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
Compatible with: BigBattery 24V, 36V, and 48V EAGLE 2 batteries via the comms port.
NOT compatible with / NOT included:
- Not a stand-alone battery monitor for non-EAGLE 2 systems
- Not a replacement for a shunt-based system battery monitor at the whole-bank level
- Battery, cables, and mounting hardware for the EAGLE 2 unit itself are not included — this is the meter accessory only
FAQ
Q: Does this meter work with any 48V lithium battery?
A: No. It is built specifically for the 24V/36V/48V EAGLE 2 battery line and its comms port. It is not confirmed compatible with other battery brands or BigBattery product lines outside EAGLE 2.
Q: Does this meter include a battery?
A: No. This is a display and communication accessory only. The EAGLE 2 battery is sold separately.
Q: Can this replace a shunt-based battery monitor for my whole system?
A: It displays charge and comms status for a connected EAGLE 2 battery. For whole-bank monitoring across multiple batteries or a full system, a dedicated shunt-based monitor is the standard tool for cross-checking.
Q: What does the shielded connector protect against?
A: It reduces the risk of electrical interference disrupting the communication signal between the meter and the battery, which matters most in installations near inverters or motors.
Warranty & Support
Refer to the "Resources (System Manuals and Warranty)" Tab above for the manufacturer's warranty terms on this accessory. If you're unsure whether this meter matches your specific EAGLE 2 configuration, ask us before you order. We always reply back.
