![]() |
|
|
Thread Tools | Display Modes |
![]() |
#21 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
![]() now those are big inductive resistors...
|
![]() |
![]() |
![]() |
#22 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() Yeah the outer ends are 2 ohms and the center are 1 ohms on each one
__________________
9 PC LCD Monitor 6 LCD Flat Screen TV 30 Desk Top Switching Power Supply 10 Battery Charger Switching Power Supply for Power Tool 6 18v Lithium Battery Power Boards for Tool Battery Packs 1 XBox 360 Switching Power Supply and M Board 25 Servo Drives 220/460 3 Phase 6 De-soldering Station Switching Power Supply 1 Power Supply 1 Dell Mother Board 15 Computer Power Supply 1 HP Printer Supply & Control Board * lighting finished it * These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10% 1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later ) 2 Hem Saw Computer Stack Board All of these had ![]() All of the mosfet that are taken out by bad caps ![]() |
![]() |
![]() |
![]() |
#23 |
Badcaps Veteran
Join Date: Dec 2010
City & State: Alberta
My Country: Canada
Posts: 2,541
|
![]() people are using ESR meters, isn't this a better way to test batteries?
|
![]() |
![]() |
![]() |
#24 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
![]() ESR meters will measure specific power, but won't specific energy.
|
![]() |
![]() |
![]() |
#25 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() I have read this as well but I do not know how to interpret the results of what the ESR value would mean for battery cell health that you could rely on
I have tried this but I have had mixed results so I do not use this for an evaluation method Last edited by sam_sam_sam; 12-20-2021 at 04:00 PM.. |
![]() |
![]() |
![]() |
#26 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
![]() ESR just needs to match the manufacturer's specifications, comparing numbers across chemistries and sizes doesn't make much sense - a value acceptable for alkaline cells can be horrible for NiMH and Li-ion but too good for lithium thionyl chloride.
An apparatus such as this is still needed to measure capacity. |
![]() |
![]() |
![]() |
#27 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() |
![]() |
![]() |
![]() |
#28 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
![]() Depends on the manufacturer, they should list it, if they aren't then they're not doing a good job describing their product. This data is related to the max current draw and thus power.
Haven't checked out Li-ion cell datasheets in a while but I definitely see it for lead acid batteries. |
![]() |
![]() |
![]() |
#29 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() Well I have had some time to play with this battery testing machine on a battery pack and the software on the computer and it has been interesting with the results of this battery pack
Well my computer decided to lock the screen and I had restart the the software again and lost the results which I do not understand because it has been turned off to not lock the screen however it does it anyway sometimes by it self Last edited by sam_sam_sam; 12-25-2021 at 12:33 AM.. |
![]() |
![]() |
![]() |
#30 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() Here are the results after more than two hours into the testing
|
![]() |
![]() |
![]() |
#31 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() Here it is after more than 4 hours of testing
|
![]() |
![]() |
![]() |
#32 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() The end results are that it tested at 7200 milliamperes hours and I do not think that cycling it more will not help because it has tested this way several times before and the results are basically the same
|
![]() |
![]() |
![]() |
#33 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,569
|
![]() The conclusion of this battery testing machine is that it is useful for battery packs that are over 24 volts and for battery packs that you want to put more than a 2 amp load on them but it has it limitations one being that you have to have a external switching power supply for charging and your battery voltage has to be above 9 volts to able to use it
It voltage range is from 12 volts to 72 volts which works for me very well I have found a 60 volt switching power supply for this battery tester that I going to buy for it One more note you do have to modify the fans if you can not stand for the fans to be at full speed all the time when in use Last edited by sam_sam_sam; 12-26-2021 at 05:55 AM.. |
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|