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GoolRC Smart Digital Battery Capacity Checker for LiPo LiFe Li-ion NiMH NiCd Battery

GoolRC Smart Digital Battery Capacity Checker for LiPo LiFe Li-ion NiMH NiCd Battery

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This RC cell meter-7 digital battery capacity checker is able to be used for LiPo LiFe Li-ion NiMH Nicd batteries.

Battery balancer
Battery discharger
Battery capacity checker

Input cells 2-7 cells 2-7 cells 2-7 cells 4-7 cells 4-7 cells
Total Voltage
Total cell battery capacity(0-99%) X X
Individual Battery cell voltage X X
Lowest cell voltage X X
Highest cell voltage X X

Voltage Difference Between

Highest and lowest cell voltages


Package Information:
Package size: 10.5 * 8 * 2cm / 4.2 * 3.2 * 0.8in
Package weight: 56g / 2oz
Gift Box Package

Package List:
1 * Smart Battery Meter

Customer Questions & Answers

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0 votes

Can this be used to measure a single lithium ion cell? If so, which pin connections would you need to make?

  • Stay AWAY from this. Its not accurate by any means. I charge brand new batteries to the full, and it shows 60% charge. My HiTech meter shows 100% and a friend at the field has a Futaba meter that also shows 100%. I tossed this in the garbage (lesson learned)

    By Tim on April 22, 2018

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0 votes

Does this give you percentage reading of the the total pack capacity?

  • Yes it will show the total votake of the battery

    By Russell on April 11, 2018

0 votes

i have 2c lipo traxxas id batteries. (one connector) The connector is different. What exactly will i need to plug in?

  • Need to use the joint balance charger is connected to the measuring appliance connector.

    By Didrika on March 22, 2018

0 votes

Will this check capacity and voltage levels for 1 single Li-ion 3.7v cell ?

  • Yes !

    By William Wilcox on March 18, 2018

0 votes

will it check lead acid batteries

  • No. Unless the battery has a compatible balancing lead (I've never seen one on a lead acid battery).

    By Jason on March 11, 2018

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0 votes

Can i use this with my 24v 50ah lifepo4 battery on my golf cart which has 1hp motor?

  • If you have a JST-XH balance plug already wired to each cell in your battery, then yes it should work, if not, no.

    By S9plus on March 1, 2018

0 votes

I just flew two 3.7v, 380mAh batteries and now both check out at 4.190v and 99%. Does this merely check capacity or also charge level?

  • this unit gives both battery capacity and cell voltage level,the 4.190,cell voltage is at full charge for a 3.7v battery

    By William H. on February 27, 2018

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0 votes

What kind of connector does it need for nicd and nimh input port and do you have one ?

  • I just connect the balance charge cable from my LiPo batteries to the checkers pins to check the battery. You can slide the connector from the battery onto the pins. LiPos are the only battery I have used with this battery checker. I have not used them with nicad or nimh batteries.

    By HappyCamper on February 7, 2018

0 votes

just recieved tester no way to attach to my traxxas lipo batts. as they have no balance connector only the big 2 wire plug hook up what can I do?

  • You might need something like the Traxxas 2938 adaptor. Hope this helps.

    By Jr. on December 21, 2017

0 votes

I am thinking of using this on my large LiFe cells at home to easily spot a straggler. So is there a name for the connector type?

  • You will need to make your own adapter like I did. It only accepts the small connectors that you would find on a servo. The hole resembles a receiver with 3 pins.

    By RC-NUT on December 9, 2017

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Customer Reviews

Average Rating:


based on 45 Customer Reviews

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  • By ***

    April 28, 2019

    Handy to check my flight batteries before flight. Checks my Lipo packs multiple ways, but I like the percent of remaining charge feature after a flight. I can also check my NiCad receiver battery on my Glow engine planes. No cables needed, just use what is on the battery packs. Easy to use. I have 3. One for use in my shop, one in my flight box, and one, just because. Accurate. It matches my charger's readings.

    Is this helpful? (0) (0)

  • By George Robertson

    January 18, 2018

    Just wish it had a manual. Works fine, but not intuitive how to connect your balance port to it. Hint: Negative goes against the top edge of the connector. Almost though mine was broken! Obviously, it's tolerant of being connected backwards.

    Is this helpful? (0) (0)

  • By Brad B

    January 15, 2018

    Very nice lipo battery tester. The only thing I really dislike is how loud the beeping is and I haven't found a way to disable it. Looks and feels a lot better than the cheaper testers that only give voltage. Again, the beeping is my only problem with it. I even took it apart but there was no way to disable the speaker without tearing up the board.

    Is this helpful? (0) (0)

  • By skm

    January 12, 2018

    Just what i need for my projects

    Is this helpful? (0) (0)

  • By Shane McKinney

    January 10, 2018

    good. I like it.

    Is this helpful? (0) (0)

  • By YUE

    January 8, 2018

    Nice product, I got what I paid for!

    Is this helpful? (0) (0)

  • By Jacob Townsend

    December 31, 2017

    Works great with LiPos, but only good with 7 cell NiMH and NiCD batteries. So 9.6 to 10.4 cannot be measured with this device.

    Is this helpful? (0) (0)

  • By Imaxinar DM

    December 15, 2017

    I have only just gotten it and started to use it. Fairly straight forward.. the manual is in the package as the display background for the retail packaging. It is not real clear on the pin inputs.. and if you follow the markings on the case you can go wrong. It looks like Ground is the 3rd pin from the right.. it's not. It is the First pin on the right. The markings on the case should be spaced out better to match over the pin it refers to. Beyond that it is just plug and play...

    Is this helpful? (0) (0)

  • By RC-NUT

    December 13, 2017

    This works great. My only complaint is you need to make an adapter if you want to test NiMH or NiCD batteries. It only accepts a receiver style plug. It's easy to use and I'm glad I bought it.

    Is this helpful? (0) (0)

  • By S***a

    December 12, 2017

    Very handy for checking battery capacity between flights and races..

    Is this helpful? (0) (0)

  • By s***c

    December 11, 2017

    nice battery checker

    Is this helpful? (0) (0)

  • By GLM in VA

    December 7, 2017

    I was told at my local hobby shop that I needed a battery checker since I had several different types of LiPo batteries as well as some older NiCads laying around. I didn't want to break the bank buying one. I'm new to the hobby scene that is using LiPo batteries, so when I received this unit thought that I should come with a cable to plug into that set of male pins on the end. Went to local hobby shop and the told me that the unit looked just like thier more expensive unit and appeared to be same quality. Then they showed me how the variouis LiPo batteries hook up right to the tester using the battery's balance connector. Duhhhh, boy did I feel stupid. My bad as my son would say. Works great, now that I know how to use it. So other than maybe a bit more descriptive set of directions for newbies, this is a fantastic buy if you are in the market for a battery tester in your RC bag of tools.

    Is this helpful? (0) (0)

  • By Josh

    December 6, 2017

    The nicest feature about this unit is the percentage display. It is the reason I bought it. Whether you are checking a 2, 3, 4, or more cell LiPo battery you can compare the same number. This is easier than remembering what voltage you should have for each cell count. You could look at individual cell voltage but the percentage gives you a picture of the entire pack. I check voltage every time my plane is on the ground. I never take off under 80%. It quickly gives you a feel for how much of the battery you are using per flight time. cons - the pins that the balance plug go into feel weak, I'm worried they will break soon, but so far no problems.

    Is this helpful? (0) (0)

  • By 83cj7jeeper

    December 6, 2017

    What can i say it works and seems to be accurate enough for what i need

    Is this helpful? (0) (0)

  • By Michael Coppock

    December 5, 2017

    The product works well but had a 3 cell battery that would only read 2 cells on. The battery was good so it left me wondering what was wrong with the unit. The unit worked fine on other batteries though. easy to check your batteries and designed well.

    Is this helpful? (0) (0)


    December 2, 2017

    nifty/handy checker..plenty of info/displayed available

    Is this helpful? (0) (0)

  • By r***a

    November 16, 2017

    A++++ very fast delivery as described super happy 😁

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  • By Brady Communications

    November 16, 2017

    This is a must for RC hobbyists. 4 stars because it is a little cheaply made, but it provide ample amount of information about the batteries you use to fly your favorite RC craft. Save your investment and protect your batteries,

    Is this helpful? (0) (0)

  • By m***s

    April 11, 2017

    Nice quality products and fast shipping!

    Is this helpful? (0) (0)

  • By m***k

    October 23, 2015

    Very fast service really please with purchase thanks alot michael

    Is this helpful? (0) (0)

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