R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Radio and Electronics

Thread Tools Search this Thread
Old 11-25-2011, 09:22 PM   #1
Tech Rookie
Join Date: Nov 2011
Posts: 8
Default Mah is not accurate

Hi, I have a 5400mah 3s Lipo, when I charged it with the Venom Pro it said it was full and the mah was no where near 5400 it was more like 2300mah and I don't know why. Any help would be appreciated.
TOTL is offline   Reply With Quote
Old 11-25-2011, 09:28 PM   #2
Tech Adept
Join Date: Jun 2010
Location: Idaho
Posts: 187
Trader Rating: 3 (100%+)

That's how much juice (mah, energy) was put back into it.
Think of 5000, as a full tank of gas
and 2500, as half full
If your battery is performing up to "advertised" capacity, then you only ran it down half way. Don't be surprised, if you don't get the "Full" amount of juice.
red7fifty is offline   Reply With Quote
Old 11-26-2011, 12:35 PM   #3
Tech Lord
Join Date: Jul 2008
Location: Houston, TX
Posts: 11,530
Trader Rating: 21 (100%+)

Most you should put back into a lipo is 80% of capacity, so for your 5400, that's 4320mah. Otherwise you're overdischarging the lipo and you won't get the best life from it.
Duster_360 is offline   Reply With Quote
Old 11-26-2011, 01:08 PM   #4
Tech Adept
Join Date: Jun 2010
Location: Idaho
Posts: 187
Trader Rating: 3 (100%+)

Your charger displays how much mah was put into it, from the beginning of the charge cycle, NOT the total it is currently holding.

Voltage, on the other hand, measures it's total amount of voltage, during it's given state of charge.

If you were to "cycle" a battery, by discharging it, then you would be able to measure the amount of mah, it was storing.....but, now since you've measured the mah, (by discharging it), your battery has no more stored juice, and you have to charge it again.
red7fifty is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lipo Charging / mah Question Dagr Electric Off-Road 30 11-05-2010 08:00 PM
MaxAmps vs Thunder Power..Which is more reliable? gaminking22 Electric Off-Road 22 08-04-2009 10:37 AM
Is EP in ? pokemon Malaysian R/C Racers 922 05-13-2004 12:05 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 10:42 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net