LiPo ESR Meter Mark II
LiPo ESR Meter Mark II
LiPo ESR Meter Mark II
LiPo ESR Meter Mark II
LiPo ESR Meter Mark II
LiPo ESR Meter Mark II
LiPo ESR Meter Mark II
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LiPo ESR Meter Mark II

AC-ESR2
Updated version of the industry standard ESR Meter - now check every cell simultaneously!
$149.99

For years, the ESR Meter has been the de facto standard for judging the quality of lithium battery packs. With the new Mark II model, it's better than ever!

From tiny single cells all the way up to a 6S 25,000mAh multirotor pack, this meter is ready to instantly provide objective data to let you measure and track the health of your packs. Internal resistance is a crucial aspect of a battery's performance, affecting the rate at which it can safely be charged and discharged. The ability to measure internal resistance enables you to compare batteries from different manufacturers with confidence rather than relying on often-suspect C ratings.

The ESR (Equivalent Series Resistance) meter gives you just that ability - powered by the battery itself, the meter provides the internal resistance of an entire pack to a resolution of 0.3 milliohms or each individual cell to a resolution of 0.04 milliohms. With the added ability to enter the capacity of the pack being measured, you can now also find out the real C rating of the battery, based on the measurable resistance.

With the updated design letting you connect your battery's balance lead directly to the meter, you can check every cell simultaneously, making the ESR Meter a more useful tool than ever.
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Input Voltage 1S-6S LiPo
Dimensions 130x100x45mm
Weight 250g

Customer Reviews

Based on 21 reviews
90%
(19)
5%
(1)
5%
(1)
0%
(0)
0%
(0)
G
George Nauck
esr meter

great little help

R
RALPH FRASIER III
Must Have tool for serious electric fliers

The unit is reasonably easy to operate, and navigate. I was able to find a couple of You Tube videos covering the basics of how to use the Mark II. A tutorial video from the manufacture would have been preferred.
On arrival, I used the meter to evaluate all of my Lipo batteries, and was surprised to discover that almost all did not come anywhere near the "C" discharge rating of the battery. Although I did not cool my batteries to the recommended 72 degrees F before testing. I was also surprised how much variation there was between different packs from different vendors with the same specifications.
With the Mark II ESR meter, I will be able to better judge the capability and condition of my Lipo batteries.

This unit is a very useful tool and I would purchase is again!

W
Wilfredo Perez Burgos
Nicely

Awesome product

R
Russell Jensen
Great Little Meter

Just started using this meter. So far I really like it and it is very useful.

W
Willie Hill Jr
Interesting Product

I watched a YT video and decided to buy the meter. Although it's not something I'm going to use "everyday", it has a place in my rc modeling toolkit. I checked "all" of my batteries (sideline a few) and took it to the flying field and checked my buddies batteries. Of course they were SHOCKED to learn the actual C rating of their expensive batteries (me too!). BTW: I checked my EOS Sentry battery checker against the ESR Meter and both read the same figures. The confirmation between the two meters was another plus I received from buying the meter. Now I can trust the EOS meter readings at the field.

Customer Reviews

Based on 21 reviews
90%
(19)
5%
(1)
5%
(1)
0%
(0)
0%
(0)
G
George Nauck
esr meter

great little help

R
RALPH FRASIER III
Must Have tool for serious electric fliers

The unit is reasonably easy to operate, and navigate. I was able to find a couple of You Tube videos covering the basics of how to use the Mark II. A tutorial video from the manufacture would have been preferred.
On arrival, I used the meter to evaluate all of my Lipo batteries, and was surprised to discover that almost all did not come anywhere near the "C" discharge rating of the battery. Although I did not cool my batteries to the recommended 72 degrees F before testing. I was also surprised how much variation there was between different packs from different vendors with the same specifications.
With the Mark II ESR meter, I will be able to better judge the capability and condition of my Lipo batteries.

This unit is a very useful tool and I would purchase is again!

W
Wilfredo Perez Burgos
Nicely

Awesome product

R
Russell Jensen
Great Little Meter

Just started using this meter. So far I really like it and it is very useful.

W
Willie Hill Jr
Interesting Product

I watched a YT video and decided to buy the meter. Although it's not something I'm going to use "everyday", it has a place in my rc modeling toolkit. I checked "all" of my batteries (sideline a few) and took it to the flying field and checked my buddies batteries. Of course they were SHOCKED to learn the actual C rating of their expensive batteries (me too!). BTW: I checked my EOS Sentry battery checker against the ESR Meter and both read the same figures. The confirmation between the two meters was another plus I received from buying the meter. Now I can trust the EOS meter readings at the field.

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