RC-Monster Forums  

Go Back   RC-Monster Forums > Questions and Answers > General Questions

Reply
 
Thread Tools Rate Thread Display Modes
Old
  (#1)
dpb318
Guest
 
Posts: n/a
07.23.2008, 07:12 PM

well now in addition to not being able to add i cant type fast enough either lol
   
Reply With Quote
Old
  (#2)
Matthew_Armeni
RC-Monster Carbon Fiber
 
Matthew_Armeni's Avatar
 
Offline
Posts: 305
Join Date: Sep 2007
Location: San Diego, CA
07.23.2008, 07:20 PM

When it reaches 0 amps it's done, like you stated.
  Send a message via AIM to Matthew_Armeni  
Reply With Quote
Old
  (#3)
Duster_360
Guest
 
Posts: n/a
07.23.2008, 08:49 PM

Lipos charge using a sequence called CC/CV - constant current/constant voltage. It will charge at CC until it reaches full voltage for the cell count (2S = 8.4v, 4S = 16.8v), then charger switches to charging at CV and the charge current will slowly fall until its zero which is where the charge is finished. This is the special charging that is needed for lipos - CC/CV and is different from charging used for Nxxx, and other types of batt chemistry.

If your lipo is new, it will need a few cycles before it will show you what its really going to be like capacity wise. Keep temps reasonable during these early cycles to get longest life and best performance.
   
Reply With Quote
Old
  (#4)
lincpimp
Check out my huge box!
 
lincpimp's Avatar
 
Offline
Posts: 11,935
Join Date: Aug 2007
Location: Slidell, LA
07.23.2008, 09:27 PM

Yep, do what Duster says. Take it easy on the lipo for the first few cycles. This will help cheaper lipos more, as the cells may not be matched as well as the high end lipos. You may also find that you have a "strong" cell, that will hold its charge better. That is why it is important to set the lvc higher than 3v per cell. I like to go with 3.2v per cell, that helps if a weaker cell discharges faster than the others. Because the lvc reads the entire pack voltage, not individual cells, you can have a problem with a 3v per cell setting.

Example, if you dischare a 3s lipo (11.1v nominal) to the lvc setting of 3v per cell, 9v, all of the cells should be 3v. Now, if you have a strongf cell that has maintained voltage of 3.2v, the other cells will be 2.9v which is not good for lipo cells.
   
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump







Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
vBulletin Skin developed by: vBStyles.com