ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets) (10awg Wire) (24")

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The ProTek R/C 2S High Current Charge/Balance Adapter is the solution you have been waiting for if you charge/discharge your 5mm bullet batteries at higher than normal amp rates, or need a heavy duty low resistance charge cable. Featuring huge 10awg wire at 24" length, gold plated 5mm bullets for the battery connection and 4mm bullet connectors for the charger connection, with an XH balance tap, this charge cable is one of a kind. The coiled jacket helps to keep the adapter flexible and tangle free and finishes off a package that will keep your work space clean and organized. 


  • Fits chargers that use 4mm bullet charging inputs
  • Hi-Amp gold plated 5mm bullets for battery connection delivers higher amp carrying capacity
  • Hi-Amp gold plated 4mm bullets on charger side
  • 10awg wire to handle high current demands
  • Coiled jacket helps to prevent tangles
  • Length 24" (61cm)

This product was added to our catalog on August 25, 2016

Wednesday, Aug 2 2017 (about 3 years ago)
ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets)
Great charging leads. had homemade ones before and these are much nicer and less money. unlike the another reviewer I have had no issues with resistance and I run an icharger aswell.

buy with confidence.
Verified Owner
Wednesday, Jul 15 2020 (4 weeks ago)
ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets)
Overall, these are trash.

Too much wire braiding, inconsistent shrink tubing, and poor soldering throughout. I bought two sets because I didn't feel like building them, and am very easy on equipment/cables.

- Solder joints broke after a few charges, there is too much solder and it's a cold solder joint on all connections.
- The 4mm bullets fit poorly (tight) to start and quickly collapsed to the point of just falling out of the batteries.
- The shrink tubing on the braiding is inconsistent and pulls on the small gauge wire, it's certainly going to fail at the balance connection to the charger.
- I've had to re-solder the small gauge wire on both sets twice.

The pro? It's motivated me to build a set that don't suck.
Verified Owner
Friday, Oct 28 2016 (about 3 years ago)
ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets)
The white wire with the 2mm bullet could be longer. I ended up adding a 4 inch extension, so I could plug it into the battery less tension. Tension on the 2mm bullet wire will cause an early failure. Lastly, I use an icharger 406b with this charge lead. When charging the SAME battery with this lead, I am getting 3.4 mOhm per cell. With my home made lead, I am getting 1.8 mOhm per cell. Occasionally, cell 2 will drop to 1.0 mOhm per cell, with the protek lead. So, this leads me to believe there is probably a bad solder/bullet connection on one of the balance wires going to the +/-. For the price is is not terrible. It would have cost me more to buy all the stuff to make this one. I will probably end up redoing the solder joints, so see if I can fix the IR discrepancy with the protek lead.
Verified Owner
Tuesday, Jun 19 2018 (about 2 years ago)
ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets)
I wish I had listened to the other reviewers, but I wanted a cable with a balance connector with the same number of pins as my charger, so I didn't have to pull out my balance adapter board.

The woven plastic covers are over every wire--this is far too much. It makes it very unfriendly to use. The wires are too stiff and the whole thing was way too bulky, as others have stated.

I have found that it is much better to use after I did the following rather painful exercise:

1) Pull the outer woven cover from under the heatshrink tubing and then slide it off completely. Then slide the heatshrink tubes off.
2) Pull the woven cover off the 2 main conductor wires, leaving the heatshrink tubing near the end bullet connectors.
3) I left the woven cover off the thinner balance wires (but this could be scrapped too)
4) Heat the shrink tubing on the end of the main conductor wires since they are now loose after removing the woven wrap.
5) I returned the outer woven cover, but shortened it by about 1.5 - 2 inches. I used the same heatshrink pieces I took off earlier, and heated them again to lock the outer wrap in place.

Ultimately, this resulted in a much much thinner charge cable. The outer wrap is now pretty much "normal size." The ends are much more flexible and while the balance cable would still be better if it was another inch or so longer on each end, it is now a usable cable. Previously it was bordering on going in the garbage can. It would be improved further if the cable was overall 6-8 inches longer.
Verified Owner
Sunday, May 20 2018 (about 2 years ago)
ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets)
The 2mm bullit snapped right off after three charges.
Balance cables should be a little longer than the charge leads.
The MASSIVE coiled jacket adds tons of strain/tension, feels like plastic sleeves.
Verified Owner
Sunday, Jan 7 2018 (about 2 years ago)
ProTek RC 2S High Current Charge/Balance Adapter (4mm to 5mm Solid Bullets)
Disappointed the Protek Prodigy 625 charger didn't come with some charge leads after spending $$$ on it. These charge leads are horrible. I thought at first sight that they looked like high quality leads, but after plugging them in one time I noticed they have a design flaw. The stretch wrap around these cable assemblies is bad for this purpose. This material is used to pull cabing. As you pull on the sheathing it stretches and tightens. May sound nice, but is doomed to fail on the smaller gage wiring (balance leads)using it with shrink tubing at the ends. Not what I'd expect after spending this much for leads.

If they don't offer a better option I will be returnign the leads, and charger.