Li Fe Rx batteries

Best practices and Useful tips and warnings that can save property, prevent injury and to keep our modelling safe.

Moderator: Moderators

SAS
Engine Started
Posts: 50
Joined: Fri Feb 19, 2010 10:57 am
Closest Airfield: GATEWAY INTERNATIONAL
Location: PIETERSBURG
Has liked: 0
Been liked: 0

Li Fe Rx batteries

Unread post by SAS » Mon Nov 05, 2012 11:43 am

I can't get all of my Li-Fe 6.6v Rx batteries to capacity (100%).They only go up to app 91% - 94% after they have been fully charged.Is that normal ?
User avatar
clivem
Fower Tousand
Fower Tousand
Posts: 4495
Joined: Mon Jan 26, 2009 9:23 pm
Closest Airfield: howick
Location: Hilton, KZN midlands
Has liked: 5 times
Been liked: 2 times

Re: Li Fe Rx batteries

Unread post by clivem » Mon Nov 05, 2012 12:53 pm

as i have said in the other thread - how are you measuring the % ??

if your using a battery tester that measures Voltage its not going to work well.

2S Life at fully charged will be 7,2V right off the charger, within seconds it will drop to its nominal 6,6V per pack (3,3V per cell) - 6,6V is around 91% of 7,2V so if you use a voltage based tester you will always see less than 100%

The only way to measure capacity is a discharge and recharge, then use Mah used and do the maths yourself to calculate % available.
SA Agent for Flex Innovations, 3DHS , AJ Aircraft, Krill, Topmodel, GP Engines, Falcon Propellors, MTW Cannisters, Emcotec Electronics, Fromeco and Tech Aero Products


Save a plane - Fly FUTABA !!!
http://www.cmchobbies.co.za

Return to “The Good and the Bad”