The Hobbyking Cell meter 8 is an essential piece of equipment any hobbyist using Lipoly batteries should own. The Cellmeter 8 will help you to quickly diagnose the health of your pack with an easy to read LCD screen, this unit works with any Lipoly pack from 2s~8s.
This indispensible tool gives you the following information in a logical and easy to follow pattern with a simple push of a button.
Screen 1 - Cell count, total voltage, remaining capacity. Screen 2 - Number of cells in series, cell balance guage and cell voltage differential. Screen 3 - Highest cell voltage and lowest cell voltage + voltage differential.
In addition, Cell meter 8 will also show individual cell voltages at the push of a button and features warning functions, with an audible alarm & red flashing LED, in addition to the LCD screen warning, which include warnings for Too Low cell voltage When any cell is 3.20v or under, Too High cell Voltage when any cell is higher than 4.20v & unbalanced when any individual cell is 0.8v higher or lower than other cells.
As pointed out more than once by others these show very inaccurate readings on used batteries. Tested on 9 batteries and this showed 58%-62% remaining where as all other meters showed 18%-23% remaining (3 other brands tested). DANGEROUS! Do not purchase as HK should not be selling these
I just got mine two weeks ago and it is full of bad readings! Yesterday at the field when it said there was 64% left in my 2200 3S battery after flying my FPV wing for 12 minutes, I checked it with a friends non HK meter and a multimeter and I really had 15% left. Checked all my other batteries and on average it was off by 50% What the point in having this if it doesn't give the correct information. Anyone else have this issue?
Does anybody know if HK has fixed the bad readings on how much power is left. I bought 2 of these just when they came out and both gave way off readings of the remaining power. I also have the red Japanese battery checker whic is ecpensive but very reliable. I see HK does not sell it anymore. Sad.
dibedu not sure what multimeter you compare with? This HK cellmeter gives OK reading for a full battery but it is way off when you measure a battery that has been used a little. For instance a battery which has 30% power left will be shown as around 70% with this meter which is outright dangerous.
Bought one of the first batch too, and sold it on immediately. I too allready have the older red CellMeter-7 which is very good, I found that for example when the red meter gave 20% full for a lipo this one would give 50% full.. Total Garbadge..
JeffBr indeed you are right. I bought another unit recently because I thought HK had rectified the problem. But still same. I just thought I needed a backup for my red meter which is still doing very fine after some 3 years or so of heavy duty. Also you can see others have same opinion about this HK cell meter as written below by Foxbat etc.
It uses an Atmel microprocessor.If you can reprogram it then there might be a chance but otherwise its not programmable.I have two of these and both are way off in voltage reading.A fully depleted btry is shown at 65 percent.Please reward if you find my answer usefull Thanks
after cell meter 8 I received, I was immediately used for lipo batteries 5 pieces, everything turned out there was no measurable 100pcnt full, only a 96-98pcnt, if the charger is less precision or cell meter 8 is a reading is too low. But a tool that really helped me in aeromodelling hobby
this meter seems to be made for life or lion* the voltage is quite accurate but the percentages are off. very good for the guys who like to read voltages* but not to good for the guys who rely on percentages. hope this helps.
IMO it should work as well, however i was told its not for life Batteries. i would go with the following which is rated for both and you can mount it if you like. comes with a low voltage alarm.
Hobbyking 2-8S Cell Checker with Low Voltage Alarm
hey guys ! my cellmeter is so so wrong ! it reads 60% power left, and after checking on the charger, they was 5% left! I almost lost a plane with that meter ! the voltmeter is ok, but the menaining percentage is so so wrong. and I ca have a much cheaper and smaller voltmeter ! I think this is a wrong design and should be exchanged by HK so please HK take it back and give me credit, this cellmeter does not work on remaining percentage, and many feedback here prove it !! thanks jacques
Hi ! You could actually report this situation to the support staff over and over again because something bothering a support staff over your order can increase the: 1)Shipping of the back ordered product.
2)Prioritizing your order as first to be packed and shipped.
Hallo Gary. You are right its only to estimate the charging level. In germany we say : 'Schaetzeisen' (guessiron or so....) Even the accuracy is not actual state of play. Measured single cells with differences up to 30 mV ( 0.03V), and a 6s Lipo up to 100mV ! (0.1V) CellMeter indicates 22.81 Volt my DIMM : 22.912 Volt . (Multimeter is a 50.000 counts unit, with /- 0.05 percent accuracy). Anyway, for a quick battery check on the field its ok. The best is the bright shining big display. For guys who need goggles, like me... For this price i recommend the CellLog 8M .
Please educate me on this item. This looks like a great addition for anyone using LiPo packs. If nominal voltage for a LiPo is 3.7V, then 100% would be 18.5V for a 5s pack. The display shows 19.28V & 70% for a 5s pack. I'm trying to understand why the display shows 70% when it's already above the nominal voltage for a 5s pack. Thanks for your help.
After reading more info, it appears the cellmeter looks at the max voltage of 4.2V as the upper limit when calculating percentage. Even then, if the display shows 19.28V & the upper limit (4.2V/cell) is 21.00, the percentage should read around 92% instead of 70% shouldn't it?, thanks again for your help.
Hi please take a look at my review for more info, if you had already watched the REVIEW then please approach me with any questions regarding the HobbyKing Cellmeter 8 REMEMBER ! I will abuse my cellmeter to get the results for you customers out there at NO COST !
Thanks MrRCFlyyer, I read your review & it was very helpful. The main question I had was why was the estimate for a 5s pack shown to be 70% at 19.28V when it should be closer to 92%. Is this typical or not?, thanks.
*Gary:_Thanks MrRCFlyyer, I read your review & it was very helpful. The main question I had was why was the estimate for a 5s pack shown to be 70% at 19.28V when it should be closer to 92%. Is this typical or not?, thanks
MrRCFlyyer:_Nah It is NOT TYPICAL it really depends on your battery.Example: If your battery is not fully charged the voltage percentage WILL decrease slightly maybe 0.5 to 1.5 percent. If may be also caused by the battery power level to so please do charge your batteries. PEACE !
I have two original cellmeter and alwais have think that there is a "BIG" problem with that meter test, think that if this one is a copy of original one, it will have same problem. If you take in mind that each type of lithiun chemistry has it's own perfect value, a unique fuel gauge can say that a batt is empty or very low and reality is that not its true, as voltage cell is not the same for a LiFe batt, a LiPo batt or LiIon batt, not to mention is totally unusable for other kind of batts like Nicd or Nimh, so would be nice if there was an option to set the type of bat, or at least the voltage per cell Regards to all
You are right, but althoug at first sight seems clear, note that many people see lipoly and think on all lithium chemistries, that it's not true. also for more of less same money you have cell log 8 without memory (no record capacity), and for a little more money same item, with memory and record capacity, both of them with more or less same features of this one, and in some aspects better, and both ones usable with all lithium chemistries, also with nickel ones, and also with Pb chemistry or defined by user, so the question is not talk about what is better or what is worse, is only to inform any customer of this question rgds
NOSTROMO: You do not need an individual cell voltage checker like this for PB, NiMH or NiCd accumulators. Nor do any of these usually have balancing connectors.
So far this is the cheapest LiPo cell checker on the market, no ifs or buts. I have the CellLog8 as well as the original Cellmeter 8, and while the cellmeter8 is indeed a nice and cheap device, in practice the ability to set it up for LiFe and similar is hardly useful - Very few people fly LiFe (understandable, they're heavier, more expensive and NOT safer) and even fewer do anything with LiIon.
Another benefit of the original CellMeter 8 is that it starts up quicker than the CellLog. The CellLog displays the version and stuff for 3 seconds before showing the voltage, while the CellMeter just goes Beep-beep for 1s and shows the voltage. Sounds like a small thing, but if you check lots of packs you'll prefer not having to wait *)
Hi Toumal, i agree and don't with you, i mean, sure that nobody, me too, need an individual cell voltage checker for Pb, NiMh or NiCd, althoug i have a lot of this batts for my cars, just remember that people not only fly, also sail, drive or have one of these other packs into transmitter. Anyway the gauge-meter of cellmeter 8 or this one is accurate to see what is inside a pack when you see lipo, but not when look any other kind of batt, so the question is not if is balanced or not, also know if a pack is full, empty, or at any point on the middle. About the wellcome screen on cellog, i agree with you, i didn't like see same info everytime i connect anything, but if you dig a little into menu, you can configure it without wellcome screen, as i did on mine. Anyway i must agree with all of you that for this price couldn't be anything so much better, only display screen almost cost the whole price of this thing, so i ordered a couple as soon as i saw it. Rgds
Hello Sir, I am Anam... It is a copy. I cannot count for the calibration and accuracy of the item but it is a cheap copy of the Cellmeter 8... It is a true copy in terms of the features and amazingly in the design aswell.
Mine does not read correct voltages or % left in packs it is out by~1volt and a 100% full battery reads as 80%. why is there no way to adjust via a variable resistor ? I checked using a quality multi meter.
-Good LCD lighting (of course it means also easy reading).
-Accurate cell reading
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There is a difference in cell reading between the tool and the charger. Will have to check further which is accurate. That aside, it is still a very useful tool when determining flight duration using different batteries and flying styles.
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Just got it today (in a week to EU from INT warehouse), just brilliant.
Works just as described, the best cheap, quick and reliable battery meter out there. Thank you so much HobbyKing, was waiting for quite some time for something like this!
No toolbox should be without one!