Lipo Resistance - RC Groups
Thread Tools
Feb 05, 2013, 05:08 PM
Chesterfield, MI USA

Lipo Resistance

What is considered to be the normal range of reistance on a Lipo pack?

What would be the upper limit of being safe and usable?

Thank You,
Sign up now
to remove ads between posts
Feb 05, 2013, 06:45 PM
Space Coast USA
hoppy's Avatar
For instance, if your application has a low current draw power system, a lipo with a high IR will work fine. However, if the system draws high currents, low IR's are necessary.

This thread will give you a program for calculating the true C-rate of your pack based on it's IR and capacity.
Last edited by hoppy; Feb 05, 2013 at 10:41 PM.
Feb 05, 2013, 07:17 PM
A man with too many toys
That depends on the battery size. I’m not sure but I think it’s proportional to the MAH capacity (if 5000 is 2 mohms than a 2500 would be 4 mohms).

Most of my large packs (5000 +) are in the 1 to 3 range when new. High C tends to have lower IR when new. I always record new IR for each pack when new. If the highest cell gets double of the low cell or 3 times the new IR than its time to toss the pack.

My smaller 2200 packs are typically in the 3 to 6 range. These are not expensive packs.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Thunder Power 65C lipo with very high resistence malcolmm Batteries and Chargers 15 Mar 08, 2017 08:36 PM
Discussion S108 remote throttle resistance tip Jay_ombie Coaxial Helicopters 1 Jan 13, 2013 04:07 PM
Discussion Measuring winding resistance Nereth Electric Motor Design and Construction 9 Jan 07, 2013 07:03 PM
Discussion RMRC VTX low resistance gil_mor FPV Talk 2 Jan 07, 2013 12:45 AM
Internal Resistance of LiPo Cells? FlyingW Batteries and Chargers 0 Jul 30, 2003 09:35 AM