New blackjack 29 owner battery question

[djviko44]

Hi fusión!

what would be your opinion? is it better EC5 or deans?

i have another boat (Aquacraft UL-1) and it comes with deans (i already have a pair of GrimRacer 2S 5000mAh 40C batteries with deans) so im probably gonna buy another couple of 2s batteries that i someday could use either on one or the other boat... (i believe my UL-1 with stock motor/esc won't take 3S)

so with that in mind i could have both my boats (and 4 batteries) all with DEANS... do you think is a good idea? or should i change everything to EC5?

[fusion_m8]

Vic: Deans are not very good for high current applications. The weakness is not the plug itself but the solder joint between the wire and the plug. When it gets too hot the solder melts and disconnects. Leaving your boat stranded in the middle of the water. EC5 plugs can easily tolerate 2-3 times the current of Deans before failing. If you go EC5 the first time on everything I believe it will save you time and money in the long run. It did for me!

[djviko44]

yeah, thanks fusion! I was Reading on HK that i should change to XT60...

I have a Traxxas EZ-PEAK PLUS charger... I already have the Deans to banana plug connector to charge my current batteries... so i'll try to find also EC5 to banana plug adapter in order to charge my batteries once changed to EC5

so you think EC5 is best, right? once again, thanks a lot for the advice!

[fusion_m8]

yeah, thanks fusion! I was Reading on HK that i should change to XT60...

I have a Traxxas EZ-PEAK PLUS charger... I already have the Deans to banana plug connector to charge my current batteries... so i'll try to find also EC5 to banana plug adapter in order to charge my batteries once changed to EC5

so you think EC5 is best, right? once again, thanks a lot for the advice!

Genuine XT60 plugs are rated to 65a. EC5 are rated to 120a. Both are rated conservatively. However I think the choice is obvious for me.

[djviko44]

Thanks, it's clear now... I'll post some pics after i change everything to EC5...

[fusion_m8]

Here is a great video regarding the weakness of using Deans plugs. Not so much the plug itself but the solder joint. Unless every factory Deans solder is PERFECT, the chances of desoldering the wire during repeated high current applications is very real.

That being said, in this video the Deans solder joint only failed at 300amps+ ...think about that for a moment... how many Li-Po's, ESC and brushless motors can tolerate 300amps+ CONTINUOUS???? The silicon insulation and plastic housings will all melt off first before the actual plug failure!

However we know EC5 plugs to have greater plug to plug surface area for electrical contact than Deans, thus the higher current rating of EC5 plugs compared to Deans and my preference of using EC5 connectors for my RC applications.


For the impatient: skip to 0:30 for the Deans test and 2:28 for the damage assessment.

[ray schrauwen]

Here is a great video regarding the weakness of using Deans plugs. Not so much the plug itself but the solder joint. Unless every factory Deans solder is PERFECT, the chances of desoldering the wire during repeated high current applications is very real.

That being said, in this video the Deans solder joint only failed at 300amps+ ...think about that for a moment... how many Li-Po's, ESC and brushless motors can tolerate 300amps+ CONTINUOUS???? The silicon insulation and plastic housings will all melt off first before the actual plug failure!

However we know EC5 plugs to have greater plug to plug surface area for electrical contact than Deans, thus the higher current rating of EC5 plugs compared to Deans and my preference of using EC5 connectors for my RC applications.


For the impatient: skip to 0:30 for the Deans test and 2:28 for the damage assessment.

Deans solder joint lasted only 3 sec. under 300 amp load. That's a short run time.