RC CellMeter 8 Digital Battery Capacity Checker Battery Voltage Tester
Quick take
The RC CellMeter 8 is a digital RC battery voltage checker designed to help you read individual cell voltages and pack totals quickly, with a high-visibility LCD (plus backlight). It is a good fit for pilots and builders who routinely check LiPo/LiFe/Li-ion and NiMH/NiCd packs before and after charging or flying. The main catch is what you do not get out of the box, no battery and no cables are included, and it is not a full “capacity test” device, it focuses on voltage readings.
Pros and cons
Pros
- Shows both individual cell voltages and total pack voltage, plus highest/lowest cell and their gap.
- Supports multiple common battery chemistries, LiPo, LiFe, Li-ion (2 to 8S) and NiCd/NiMH (4 to 8S).
- LCD backlight improves usability in low light at the field or bench.
- Includes servo tester functionality for standard and narrow servos (pulse range provided).
Cons
- Build feel can be less premium for some buyers (it can feel “cheap”).
- Requires you to have the right battery connection parts, the battery is not included and there is no cable included.
- Battery “capacity checker” positioning may be confusing, it primarily measures voltage and cell balance information.
What buyers think
Buyer-review evidence is generally consistent on ease of use and day-to-day usefulness for RC battery checks. Many people highlight that it is straightforward to connect the balance plug, it cycles through readings so you can quickly see each cell voltage or the pack total, and the LCD backlight is a meaningful upgrade for field use. A recurring theme is that it supports routine pre- and post-flight checks, which helps users keep an eye on whether packs are still “up to par.” There is also some limited buyer feedback that the device’s physical build feels lightweight or inexpensive, even though it still performs the core voltage-checking job. Overall, review evidence supports that the CellMeter 8 is a practical voltage and cell-readout tool, while buyer-review detail does not provide strong confirmation of anything beyond voltage monitoring (for example, any deep capacity test behavior).
Key features that matter for RC battery checks
Cell voltage and pack total on a simple interface
The core job of the RC CellMeter 8 is to let you verify voltages before you fly or while you monitor packs during charging. It can show:
- Individual cell voltages (for supported LiPo/LiFe/Li-ion balance connections up to 8S)
- Total pack voltage
- Lowest and highest cell voltage
- The voltage gap between the highest and lowest cell
For balanced-charge routines and spotting packs that are drifting, the “gap” readout is especially helpful, it makes imbalance easier to notice at a glance.
Supports multiple battery chemistries and common RC pack sizes
The tester is built for both lithium and NiMH/NiCd workflows:
- LiPo, LiFe, Li-ion (2S to 8S)
- NiCd and NiMH (4S to 8S), using its discharge plug port
If you fly FPV or run a mix of battery types, this broad compatibility is one reason buyers keep it in their flight kit.
Voltage precision and what it means in practice
The device is listed with a 0.001V test precision. Practically, that supports finer-grained readings when you are comparing cell-to-cell voltage and checking pack consistency, especially when you are cycling through multiple packs.
LCD backlight for bench and field visibility
The upgrade version includes an LCD backlight. Reviewers who purchased specifically for improved visibility mention that the screen is bright and easy to read during use, which is a straightforward quality-of-life benefit.
Servo tester mode (standard and narrow servos)
In addition to batteries, it can function as a servo tester. The listed servo test pulse ranges are:
- 1000 to 2000 microseconds or 500 to 2500 microseconds (depending on mode)
This can be handy for quick servo checks during setup and maintenance, especially for builders who want one compact tester for multiple jobs.
Who should buy this battery tester
- You routinely use LiPo/LiFe/Li-ion packs (2 to 8S) and want an easy way to view individual cell voltages and balance gaps.
- You fly electric RC and prefer a quick pre- and post-flight voltage check routine.
- You also work with standard or narrow servos and would benefit from having a built-in servo tester mode.
Who should skip it (or look closer)
- You want a true “capacity test” result. Despite the “capacity checker” wording, the device is fundamentally a voltage and cell-voltage monitor. If your goal is to measure real usable capacity under load, you may need a dedicated capacity testing setup.
- You do not already have compatible battery leads and connectors. The unit does not include the battery, and there are no cables included, so plan to match it to your existing balance plug and servo connector workflow.
- You care about premium build feel. Some buyers feel the device comes across as inexpensive in construction, even though the readout function is still viewed positively.
Pros and cons in plain terms
Pros
- Clear cell-by-cell voltage monitoring, including lowest/highest cell and voltage gap.
- Works with common RC lithium chemistries (2S to 8S) and NiMH/NiCd (4S to 8S).
- Backlit LCD helps you read voltages in less-than-ideal lighting.
- Dual-purpose tool with servo tester capability for standard and narrow servos.
Cons
- Build quality feel may not impress buyers looking for a rugged, “tank-like” tester.
- Missing accessories, no battery and no cables are included, which can add cost if you need connectors.
- Best for voltage monitoring, not for comprehensive capacity testing under load.
Verdict: is the RC CellMeter 8 worth it?
The RC CellMeter 8 is worth considering if your priority is fast, practical voltage checking for RC batteries, with a bright LCD backlight and the ability to inspect individual cells and balance gaps. It is especially appealing if you also want a compact servo tester for standard and narrow servos. It may not be the right purchase if you expect it to deliver true capacity test results under load, or if you need the kit to include all necessary cables and battery connections.
FAQ
What batteries does the RC CellMeter 8 support?
It supports LiPo, LiFe, and Li-ion packs from 2S to 8S using its balance plug port, and NiCd and NiMH packs from 4S to 8S using its discharge plug port.
Can it display both individual cell voltages and total pack voltage?
Yes. The display can cycle through individual cell voltages and also show the total battery voltage, along with the lowest and highest cell readings and their voltage gap.
Does it measure battery capacity or only voltage?
It is designed to check voltages (including individual cell voltages) and show balance-related information like the highest-lowest cell gap. It focuses on voltage monitoring rather than a full capacity-under-load test.
Is the LCD backlight helpful in low light?
It includes an upgrade backlight version intended to improve visibility, and multiple buyers specifically mention improved readability because of the brighter screen.
Does the package include cables or the battery?
No. The tester is sold without the battery and without included cables, so you will want to use your existing compatible connectors.
Can it test servos?
Yes. It includes a servo tester mode compatible with standard and narrow servos, using listed pulse ranges (1000 to 2000 microseconds or 500 to 2500 microseconds).
Specifications
| Product Title | RC CellMeter 8 Digital Battery Capacity Checker Battery Voltage Tester LCD Backlight for LiPo Life Li-ion NiMH Nicd |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery Testers |
| Brand | FPVDrone |
| Manufacturer | FPVDrone |
| Color | black |
| Item Weight | 0.07 Pounds |
| Power Source | Battery Powered |
| Measurement Type | Voltmeter |
| Compatible Devices | Batteries (LiPo, LiFe, Li-ion, NiCd, NiMH), Servos (Standard and Narrow) |
| Style Name | Digital |
| Item Dimensions | 4.5 x 3.4 x 1 inches |
| Brand Name | FPVDrone |
| Model | LSDX1 |
| UPC | 757450336516 |
| Warranty Description | NO |
| Part Number | LSDX1 |
| Unit Count | 1.0 Count |
| Style | Digital |
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