Charging el wire/blue 12v lipo batteries

Show and tell for your homebrew nv projects. DIY 'Stickies' here too.
Post Reply
User avatar
paulham
Posts: 1186
Joined: 09 May 2012, 12:35
Location: Potters Bar, Hertfordshire

Charging el wire/blue 12v lipo batteries

Post by paulham » 02 Jun 2018, 11:23

I've lost one of my chargers and need to charge 2 batteries before this evening.

Does anyone know how to charge these el wire/blue 12v lipo batteries?
Can I just supply it 12v from another source or does it need to be controlled?

Cheers
Paul

User avatar
paulham
Posts: 1186
Joined: 09 May 2012, 12:35
Location: Potters Bar, Hertfordshire

Re: Charging el wire/blue 12v lipo batteries

Post by paulham » 02 Jun 2018, 11:25

Or what about using a splitter to charge 2 at the same time?

phoenix
BRUCE ALMIGHTY
Posts: 4700
Joined: 09 May 2012, 14:40
Location: Aberdeen

Re: Charging el wire/blue 12v lipo batteries

Post by phoenix » 02 Jun 2018, 13:27

To get a decent charge into your battery, your power supply should have an output between 12 and 12.6 volts - definitely not more than 12.6 volts.

Cheers

Bruce
LAND ROVER - THE WORLD'S WORST 4X4 BY FAR

User avatar
paulham
Posts: 1186
Joined: 09 May 2012, 12:35
Location: Potters Bar, Hertfordshire

Re: Charging el wire/blue 12v lipo batteries

Post by paulham » 02 Jun 2018, 16:04

Thanks for the reply Bruce. I was hoping that you would see my thread.

The charger which came with one of the battery packs actually outputs 12.9v. Perhaps this drops down under load.

Cheers
Paul

phoenix
BRUCE ALMIGHTY
Posts: 4700
Joined: 09 May 2012, 14:40
Location: Aberdeen

Re: Charging el wire/blue 12v lipo batteries

Post by phoenix » 02 Jun 2018, 16:35

A proper LiPo charger will have a fixed output voltage, and if it's a 3 cell pack, it will be no more than 12.6v.
If it's just a nominal 12v power supply and it's giving 12.9v off load, then it will probably drop to less than 12.6 when connected to the battery, but you really need a meter to check this.
Also, as the battery charges up and the current going into it gets less, the voltage will rise, and if it's left connected to the charger for too long the voltage may well go above 12.6 and damage the battery.
If you have a voltmeter, try to monitor the battery voltage when the charger is connected and at regular intervals when charging. I'd be incluined to stop charger when the voltage gets around 12.2 volts.

Cheers

Bruce
LAND ROVER - THE WORLD'S WORST 4X4 BY FAR

User avatar
snoopy
Posts: 2615
Joined: 22 Jun 2012, 23:22
Location: NER NER LOL stoke on trent

Re: Charging el wire/blue 12v lipo batteries

Post by snoopy » 14 Jul 2018, 11:10

cheepo B6 hobby chargers or better guys.....at a push yu cant beet having the backup that'll also work on your car battery.
'who is that masked man? its the kemosabby der..the bloody injun tells you every week!'

Post Reply