Digital Multi-cell Lithium Battery Voltage LCD Display for R/C Models

Pros: Measures 2S to 6S LiPo batteries (up to 25Volts). Nice bright display.

Cons: Can't measure single LiPo cell. Minimum is 2S (it take power supply from second cell). The error is up to 40mV (0.04V) on some cells.
Measuring results of my sample:
1C -> measured 4.18V, show 4.16V
2C -> measured 4.17V, show 4.19V
3C -> measured 4.18V, show 4.22V
All -> measured 12.54V, show 12.6V

Other: Buy it. The accuracy is enough for fast field testing of battery.

Pros: Price
Does what I need it to do
Lightweight
Portable

Cons: Long wait in shipping
Worse yet was the stocking time while waiting for the supplier to make it available
don't have any con's on the item itself

Other: cheap stuff but you risk the chance of having to wait longer if your items arrive damaged since they are located on the other side of the world from the United States (where I live)

Pros: Price - cheaper than the cheapest panel meters. Size - Its small, but not microscopic Usefulness - It make a job that would normally be difficult with a multimeter very simple Build - OK, so its not in a box, but the soldering is spot on. Idea of using clear heat shrink is brilliant for this device.

Cons: Can't think of a single one (must be a first)

Other: If you have any battery packs with the balance charge connector, then buy one of these now, go on, what are you waiting for?

Pros: This is a cheap and dirty multi-cell voltmeter I would have to build myself..... It scan through all the cells, beginning with No1 . . , till All.
By the way, pinouts are printed on the PCB, with pin1 marked '-', pin7 mark '+', the rest sensor pins.
This make a wonderful panel meter ... I 've been looking for my HV modules, one for 0-10, 2nd for 0-3 representing 10mA and 3KV full scale. Wonderful.
But this one is for multicel lithum pack indicator.

Cons: What a pity that it did not produce warning and or voltage fault output when one of the cell is under votlage or over-voltage based on multiple of 4.20V.
Otherwise it will becomes one of those killer applications/prodcuts that every RC or lithium pack needs.

Other: look like I may have to buy a few!

Pros: In my previous review, I thought it measured votlage at various pins...
No! It measures individual voltage of each cell, and the total voltage eventually under ALL.
Actual measurement against Fluke89-IV:
No1. 3.47 Actual 3.4775V
No2. 3.45 Actual 3.4711V
No3. 3.54 Actual 3.5489V
No4. 3.57 Actual 3.5629V
N05. 3.76 Actual 3.7548V
ALL. 17.8 Actual 17.806V.
It appears that the maximum error is 0.03/3.50 gives 0.5%. For all intent and purpose, it's amateur grade and fit for use.
So when charging, should not go for 4.22V full charge, but 4.10V for safety.

Cons: Well, I would pay more if they provide and under voltage, over charge alarm pin out, to be connected to warning alarm use.

Other: For $1 to $2 more, it could be built into a professional grade product.

Pros: Very easy to use, and very handy out on the field especially if using for air or sea vehicles in making the decision to use a battery or not before flying or boating.

Cons: I find the more cells a battery has the more inaccurate the unit becomes (reading higher than the actual voltage). Cell one's reading being the most accurate (within about 0.03volts) and I was using up to three cells in which the third cell was least accurate (0.06volts deference from actual)

Other: Very handy, accurate enough to make a educated decision whether or not to bother driving, flying, or boating with your chosen battery. Also handy if you accidental mix charged batteries with used ones. I personally recommend this product.

Pros: It's a multi-channel very cheap and tiny voltmeter.
LED display is bright enough, build quality is very good.

Cons: It is not precise, with pin 2 open it told me there is a 0.05V
You have to connect pin 3 to + of a battery or a power supply to get device working.
The most important is that no firmware upgrade available. You can't change the speed of indication per channel, you can't add over- and undervoltage detection.

Other: It's a great device, however you can't change the firmware yourself.

Pros: Not to shabby multi cell voltmeter that's easy to use and very visible even in daylight outside. Very easy to use, and can keep you from flying with a non fully charged battery.

Cons: Not very accurate on the individual cell readings

Other: for what it does it does it well... I have 2 of these meters (in case I lose one) and they are one of the most usefull tools in my RC tool box

Pros: Very light and small, good for RC helicopter use. I use it for bicycle lighting system. So I don't drain the battery too much . Beep is very loud so you can hear it in traffic well. simple mounting

Cons: Beeps evry time when you plug it in . anoying Simple plastic shrink tube around . Plug from battery can be mounted in 2 ways, but only one way works . Difficult to place neatly in a dashboard or to attach to something. uses 20mA when attached too battery . So you have to remove it after use .

Other: Works great, good price . Excellent for hobby and RC batteries . With some work you can build it in a housing .