Good quality battery connectors

[NCFRC]

Just a quick test I did to see how efficient a JST connector is.
This test was done at a very modest 4 amp load.

The pack used was a Nanotech 750mah 1S battery.

I tested it first thru the stock JST connector and then with the connector
cut off and alligator clips for load and small voltage sensing clips.

The voltage discharge time with a JST connector was 15 sec to 4.0v and 235 sec. to 3.70v

The voltage discharge time w/o the JST conn. was 40 sec to 4.0v and 320 sec. to 3.70v

The average battery voltage over the entire discharge was 3.67 volts vs. 3.73 volts ,,,,
quite a difference.

If this connection was soldered / hard wired I'm sure it would be even better.

Just a little info for the over thinking techno's out there.

 

[holtneil]

Hi mate most use XT60 which will take 60 amps , there is also XT70 70amp and I use 4 mm connectors on my 6 cell as its over 70amp pull , even the old deans will take more amps then the JST

 

[NCFRC]

I was just using the basic JST connector as an example . If you guys are using a true 60-70 amp connector , thats awesome.
We used Sermos / Power Pole and Deans when we were racing round cell RC cars / trucks which were rated for 30-40 amps.
The die hard racers all soldered there batteries in , even though most would end up with a cold solder joint.

4mm , as in bullet connectors ? That and 5mm seem very popular with hard case lipo's.

 

[holtneil]

The 4mm is standard on 6 cell i getting old i may be wrong
http://www.hobbyking.com/hobbyking/store/__14610__Turnigy_nano_tech_4000mah_5S_25_50C_Lipo_Pack.html

 

[NCFRC]

Do most high end quads run a 5 cell battery ?
That's some incredible voltage.

 

[holtneil]

Some run 6 cell ,its not a problem you get ESC that work on 6 cell and motors too ,then use a bec to reduce voltage to run FCB etc