New Products Flash Sale
Thread Tools
Old Mar 19, 2007, 10:22 PM
maddmann is offline
Find More Posts by maddmann
Registered User
maddmann's Avatar
Discussion

4.5 ah Nimh 4.8v pack discharge rate


I've got two 4.5 ah 4.8v Nimh packs that I want to check. What is a good discharge rate to check the capacity? I've got a Triton to discharge them with but I need to know the best discharge rate to check these out.
Sign up now
to remove ads between posts
Old Mar 19, 2007, 11:23 PM
ebill3 is offline
Find More Posts by ebill3
Registered User
ebill3's Avatar
Some manufacturers use 0.2C when establishing capacity, but that would take forever and I suspect the Triton has a timeout feature. I would discharge at 1C, but I believe the Triton has a 3 Amp discharge limit, so I would go for the 3 Amps.

Bill
Old Mar 20, 2007, 05:24 PM
maddmann is offline
Find More Posts by maddmann
Registered User
maddmann's Avatar
Anybody else have any thoughts? I discharged them at 1.5A but they only I only got about 1000 mah out of them before they hit 4.4v. Do you discharge Nimh down to 0.9v per cell?
Old Mar 20, 2007, 05:55 PM
ebill3 is offline
Find More Posts by ebill3
Registered User
ebill3's Avatar
Sanyo uses 1.0 volts per cell for the end voltage.
Sanyo says 100% capacity when discharged at 0.2C, ~95% at 1C, ~85% at 3C.

Bill
Old Mar 21, 2007, 12:24 PM
Rodney is offline
Find More Posts by Rodney
Registered User
In order to compare to factory specs, discharge at 0.2C to 0.25C down to 0.9 volt/cell. If you discharge at a higher rate or to a higher low-end voltage, you will get a lesser value for the mah.
Old Mar 21, 2007, 01:19 PM
ebill3 is offline
Find More Posts by ebill3
Registered User
ebill3's Avatar
Never mind - deleted.
Last edited by ebill3; Mar 21, 2007 at 02:43 PM.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold (4) DS821 Digital servos with 1100 mah 4.8v pack, switch, and hardware phoneguy Aircraft - General - Radio Equipment (FS/W) 2 Jan 07, 2007 08:16 PM
2/3 AAA 4.8v pack source? Battleseed Batteries and Chargers 0 Sep 01, 2005 02:14 PM
Can I charge a 4.8v pack with a 7.2v charger? webnetxpress Batteries and Chargers 5 Jan 07, 2003 06:40 PM