It time to get back to this project and finish it so I can start doing some battery testing and build a couple of battery packs
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https://www.ebay.com/itm/405035016711
I got this device yesterday and did some testing on some tabbing and some incandescent light bulbs and it seems to work very well from what I can tell but how do I know how accurate the m-ohms section is what can I use to verify it accurately I also tested some li-ion battery cells and this seems to be fairly accurate because I have another tester and they seem to agree with each other
I also checked some capacitors with it that were brand new and seem to show about what I expected to see with my blue capacitor tester so I think it... -
Hi, I have 2 identical capacitors from an old scope I'm trying to get running.
Both caps measure ok in ESR and Capacitance values imo.
Data sheet says tolerance spec is -10 +50%. And these are way under that.
Both of there original values are marked as (430uf 200vdc).
After ~40 years, they now measure 485uf and 465uf. Well under the +50% tol.
Anyway I charged them up to 24 volts dc and discharged them slowly down to 10 volts using a Digital Multi Meter. Funny thing was one of them just took over 4 minutes to discharge down to 10 volts. And the... -
I just bought this device that came in the mail today I put a set of 4 brand new 21700 high current battery on the charger
The charger has four individual temperature sensors for each battery cell
The bar graph for each individual battery cell is very primitive but will give you a good idea of how each battery cell is preforming and I find something odd I put on the individual battery testing machine that gives more details of the charging/discharging curves but it will be quicker to just charge and discharge battery cells that do not have any issues
Or test... -
Hi friends
I have reverse engineered this tester, schematic is attached and is complete except for capacitor values. These testers annoyingly have no model number but they are the ones you find on the first page of just about any website if you type in "18650 4-channel tester". There is also a 2-channel variant and a newer 8-channel variant. They are very cheap (about £15) and can measure voltage, current, internal resistance and capacity. They have a multicolour display for all these statistics. They also have terminal blocks so that if you want to use a breakout board... -
I recently bought this at full price I am getting paid for this was not free (Lithium Lead-acid Battery Capacity Tester 30V 20A 150W Discharge Battery Tester)
https://www.ebay.com/itm/38444852660...53.m2749.l2649
MD150 discharge tester parameters
Model MD150 discharge voltage 0-30V
Discharge power 150W, discharge current 0.1-20A freely set
Equipment power supply: DC12V/2A, operation mode, discharge manual switch
Error 1% heat dissipation temperature controlled...
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