 Help with battery management |
 Apr 25, 2014 - 1:10 PM
|
 
|
 Enthusiast  Joined Aug 11, '08 From London Currently Offline Reputation: 7 (100%)  |
I have a 12v li-po cell. The alternator puts out 80amps.Is that too much current to charge a small cell?
How do I stop the alternator over charging it? The instructions say I must make sure the the battery management system doesnt exceed 15v. This post has been edited by yellowchinaman: Apr 25, 2014 - 1:11 PM |
 |
Replies
(1 - 7)
|
Apr 25, 2014 - 1:29 PM
|
|
 Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
I'm sure you have a voltmeter or multi-meter right? Hook it up to the battery with the car running and rev it up to 5K, if it doesn't exceed some 14.4-6 volts you're fine.
-------------------- 2001 Miata LS 5-speed
|
|
Apr 25, 2014 - 1:35 PM
|
|
 Enthusiast Joined Apr 12, '13 From Bulgaria Currently Offline Reputation: 53 (100%) |
Buy a small voltmeter and monitor your charging all the time.
 -------------------- |
|
Apr 25, 2014 - 2:34 PM
|
|
|
Enthusiast Joined Aug 11, '08 From London Currently Offline Reputation: 7 (100%) |
QUOTE (The_enD @ Apr 25, 2014 - 2:35 PM)  Buy a small voltmeter and monitor your charging all the time. How's that gona help stop the car over charging it? Also is it too much juice going into the cell? |
|
Apr 25, 2014 - 3:08 PM
|
|
|
Enthusiast Joined Apr 12, '13 From Bulgaria Currently Offline Reputation: 53 (100%) |
Your ECU controls the alternator's internal voltage regulator. If anything is to happen you will see it fast and react accordingly, instead of driving for an unknown period with a bad charging system.
And your alternator is not constantly producing 80A. When demanded, it supplies. -------------------- |
|
Apr 25, 2014 - 3:14 PM
|
|
|
Enthusiast Joined Aug 11, '08 From London Currently Offline Reputation: 7 (100%) |
I see. My boost controller has a built in volt meter and at most its 14.1v when boosting.
so you think its ok to just connect it like a normal battery? |
|
Apr 25, 2014 - 3:19 PM
|
|
|
Enthusiast Joined Apr 12, '13 From Bulgaria Currently Offline Reputation: 53 (100%) |
I am not familiar with the type of cell you have mentioned. But if it designed for in car use, just follow the instructions and install.
-------------------- |
|
Apr 25, 2014 - 3:24 PM
|
|
|
Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
14.1V is kind of weak, so you really don't have anything to worry about then.
-------------------- 2001 Miata LS 5-speed
|
 |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
| Lo-Fi Version | Time is now: June 29th, 2025 - 11:40 AM |