This is a digital capacity meter built for 36V LFP battery packs wired in a 12S configuration. It gives you a real-time readout of state of charge, so you're not guessing how much runway is left in your pack.
Voltage monitoring on an LFP pack is not optional if you want to protect cell life. LFP chemistry has a notoriously flat discharge curve, which means a simple voltmeter alone tells you very little about actual remaining capacity — a purpose-built capacity meter calibrated to the LFP curve gives you a far more honest picture of state of charge. 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.
- Designed for 36V LFP battery systems
- Built for 12S cell configuration
- Digital display for direct capacity readout
- NOT rated for 48V 16S packs
- NOT rated for 24V systems
- NOT compatible with non-LFP (e.g., NMC) chemistries — the voltage curve mapping will be incorrect
The technical friction: a capacity meter reads voltage at its sense leads, so any loose or corroded connection at the tap point introduces measurement error and can produce a false low-capacity reading even on a healthy pack. Left uncorrected, that noise can mask a real developing imbalance across cells, which over time contributes to uneven cell aging and eventual thermal stress on the weakest cell in the string. Before final install, verify continuity and connection integrity at every sense-wire tap with a digital multimeter, and confirm you're reading full pack voltage within expected range for a 36V 12S LFP string. Torque any terminal connections at the tap points to the hardware manufacturer's spec — loose connections are a documented root cause of resistive heating flagged in NEC guidance on terminal connections.
- Digital readout built specifically for LFP voltage characteristics
- Matched cell count (12S) reduces setup guesswork versus universal meters
- Direct fit for 36V LFP pack architecture
| Spec | Value | Unit |
|---|---|---|
| Voltage System | 36 | V |
| Cell Configuration | 12S | cells in series |
| Battery Chemistry | LFP | - |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Fits: 36V 12S LFP battery packs
- Does NOT fit: 48V 16S LFP packs
- Does NOT fit: 24V systems
- Does NOT fit: non-LFP chemistries (e.g., NMC, lead-acid)
| Category | Detail |
|---|---|
| UL Listing | [NEEDS VERIFICATION] |
| IP Rating | [NEEDS VERIFICATION] |
| NEC Ampacity Reference | Not applicable — voltage/capacity indicator, not a current-carrying conductor |
FAQ
Is this meter rated for 48V systems?
No. This meter is built specifically for 36V 12S LFP packs. It is not rated for 48V 16S systems.
Will this work with lithium-ion (NMC) batteries instead of LFP?
No. The voltage curve on this meter is calibrated for LFP chemistry. Using it on NMC or other chemistries will give you an inaccurate state-of-charge reading.
What cell count does this meter support?
This meter is built for a 12S configuration on a 36V LFP pack.
Does this meter come with a warranty?
Manufacturer warranty terms for this meter are not listed in the current specification sheet. Refer to the Resources tab or contact BigBattery for current warranty coverage.
Warranty & Registration: Manufacturer warranty terms for this specific meter are not included in the current specification sheet [NEEDS VERIFICATION]. Please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for current warranty documentation, or contact us directly and we'll get back to you with what we can confirm.
