FLY RC Cellmeter 7 Digital Battery Capacity Checker Controller Tester Voltage Tester for LiPo Li-ion NiMH Nicd Battery
Quick take
The FLY RC Cellmeter 7 is a lightweight, easy-to-use battery capacity checker that helps you read individual cell voltages and total pack voltage for common RC battery chemistries. It can also display an estimated remaining capacity percentage, but only for certain battery types. If you mainly run LiPo or Li-ion style packs and want fast field checks before use, it is a practical add-on, with the key caveat that the % capacity readings and some advanced metrics are not available for every chemistry.
Pros and cons
Pros
- Designed to test multiple battery types (LiPo, LiFe, Li-ion, NiMH, NiCd), with the number of cells supported based on chemistry.
- Shows useful voltage diagnostics like total voltage, individual cell voltages, and min/max cell voltage (battery-type dependent).
- Displays remaining battery capacity (%) for supported chemistries, which can speed up quick go/no-go decisions.
- Simple button-driven interface for switching test mode, battery type, and display view.
Cons
- Capacity percentage readings are chemistry-specific, and some voltage or capacity features are marked as unavailable for NiCd and NiMH in certain modes.
- It requires a pack connection through its cell interface, so it is not a standalone “measurement without plugging in.”
- Review evidence suggests mixed experience with at least one advanced function (balancing-related behavior), so do not rely on it as a balancing tool.
What buyers think
Buyer-review evidence is strongly aligned around convenience and field usefulness. Many reviewers describe it as a quick way to check individual cells and overall pack condition before connecting batteries to RC gear. Users also highlight its simplicity, noting it helps confirm packs are charged and can reveal weak or defective cells. There is limited but relevant feedback about feature behavior, including at least one report that an advanced function related to balancing did not behave as expected, which suggests it should be treated primarily as a checker, not a balancing solution.
What the FLY RC Cellmeter 7 actually measures
This tester is built to monitor pack voltage and, in supported chemistries, provide additional diagnostic views that are useful for RC maintenance.
Battery types and cell counts
- NiCd and NiMH: supports 4 to 7 cells (individual cell voltage and some derived metrics are limited by chemistry).
- LiPo, LiFe (listed as LIFE), and Li-ion: supports 2 to 7 cells.
Display modes
- Total voltage (overall pack voltage) for supported chemistries.
- Individual battery cell voltage views for LiPo, LiFe, and Li-ion (individual cell voltage reporting is not listed for NiCd or NiMH modes).
- Lowest and highest cell voltage for supported chemistries (LIFE and Li-ion list lowest cell voltage, and LIPO and LIFE and Li-ion list highest cell voltage).
- Voltage gap between highest and lowest cell voltages for supported chemistries (helpful for spotting imbalance).
- Remaining battery capacity (%) for supported chemistries (LIPO, LIFE, and Li-ion list capacity percentage display, while NiCd and NiMH are indicated as not supported for capacity %).
Who it is best for
The FLY RC Cellmeter 7 makes the most sense if you do quick diagnostics on packs in between charge cycles and outings.
- RC pilots and mechanics who want to check cell voltage and balance indicators before powering a model.
- Airsoft and hobby users with battery packs that benefit from quick voltage verification prior to use.
- Buyers who value simplicity and an at-a-glance display more than deep software or smartphone logging.
Who should look at something else
- If you mostly use NiMH or NiCd and specifically want remaining capacity (%) or per-cell voltage detail, this tester’s supported modes are limited by chemistry.
- If you want a balancing device or expect the checker to “fix” imbalance, this is not positioned that way, and review feedback suggests relying on it for balancing behavior is a mismatch.
Pros and cons, in plain terms
Why buyers like it: it is described as quick and straightforward, and it provides the voltage information that matters for catch-before-problem battery checks, especially for cell-based chemistries.
The tradeoffs: the tester’s feature set varies by chemistry, so your results depend on what batteries you actually run. If you want the same type of reporting across every pack you own, double-check the supported modes first.
Price and availability
It is positioned as an affordable, compact battery-checking tool, and availability is listed as in stock in the current marketplace view. For the most up-to-date pricing, use the link below.
Verdict
The FLY RC Cellmeter 7 is a solid pick for RC-style battery checking, especially if you run LiPo, LiFe, or Li-ion packs and want fast visibility into cell voltages, min/max readings, imbalance indicators, and (for supported chemistries) a capacity percentage estimate. It is less ideal if you need consistent per-cell detail and capacity % for NiMH or NiCd packs, or if your goal is balancing rather than checking.
FAQ
Does the Cellmeter 7 show remaining capacity percentage?
Yes, it can display remaining battery capacity (%) for certain supported chemistries, including LiPo, LiFe, and Li-ion. NiCd and NiMH are indicated as not supporting the capacity % mode.
Can it display individual cell voltages for all battery types?
Individual cell voltage reporting is listed for LiPo, LiFe, and Li-ion. For NiCd and NiMH, individual cell voltage is indicated as not supported in the listed modes.
How does it help with battery imbalance?
For supported chemistries, it can show lowest and highest cell voltage, and it can display the voltage gap between the highest and lowest cell. Those views can help you spot packs that are not balanced before use.
Is it a battery charger or balancer?
No. It is a tester and checker designed to read battery voltage information. It should not be treated as a balancing tool.
What cell counts does it support?
LiPo, LiFe, and Li-ion modes support 2 to 7 cells. NiCd and NiMH are listed for 4 to 7 cells.
Specifications
| Product Title | FLY RC Cellmeter 7 Digital Battery Capacity Checker Controller Tester Voltage Tester for LiPo Li-ion NiMH Nicd Battery |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Testers |
| Brand | FLY RC |
| Manufacturer | FLY RC |
| Color | Black |
| Power Source | Battery Powered |
| Measurement Type | Voltmeter |
| Style Name | Capacity Checker |
| Brand Name | FLY RC |
| Model | [POSSIBLE_FORMAT: FL-####] |
| UPC | 765470656330 |
| Part Number | FLY RC-002 |
| Unit Count | 1.0 Count |
| Style | Capacity Checker |
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