I got three of the 65C packs yesterday....the wiring harnesses have a different male bullet connector than the 40Cs I have. They look similar to the castle bullets, and should fix the problem with the bullets flattening out over time and becoming loose.

Did the 5800s you bought come with a ROAR APPROVED sticker on them? I'm asking because these are on the ROAR approval list by part number but they don't appear in the HobbyPartz ROAR approved section of the website. Also, can you verify the part number on the case of the 5800s? Gens Ace seems to change the part numbers around occasionally and then does not get them reapproved by ROAR. If they are not on the approval list by part number, then they are not ROAR approved. It doesn't matter if they have the sticker or not.

Just received 8 packs from GensAce and none of em say roar approved last year I got 9 packs and most of them said roar approved so who knows.

What was the part number on the 5800s you just got?

Same thing happened to my 4s 5000 I bought March 10th. I know they won't cover it since I cut it open to try and solder the tab back on, same result, solder won't stick to whatever that stuff is. I guess I could make it into a 3s pack. Kind of pissed, 5 cycles on my pack too, wires not run through the hold down straps. I'm going to try Turnigy for my next battery. It's a real letdown, all the Gens ace 2s batteries I have are great... Not so good with the 4s hard case.

I think ROAR may have made a mistake when they published the list. Most of the Gens Ace batteries all have the same style designation, then a couple have some oddball number system. My 4-0c battery is supposed to be approved but it is the same numbering system as the 30c, 45c, and 50c that are approved. However, for the 40c battery they show some strange part number. I actually have the approved stickers. LMAO.

Exact same problem here, two 4S packs. The solder tab was broken off with about 1/8 inch left. Managed to solder the wire back on with the solder still left on the positive lead. I covered the connection with shoe goo to prevent it from flexing and breaking again. I noticed the case on both batteries wasn't taped to the cells at all. The factory didn't peel off the film on the double sided tape to stick the case to the cells! Easy enough to fix that. Now the case is stuck on there good. At least 5 runs on the packs since repairing with no issues.

I havent had a problem with breaking the solder. My problem seems to be the life span of the batteries. The 2 packs I have now have less than 50 runs each and are already taking significantly less than 5000 mah. I always balance charge them at 3.5 amps. Never overheated either. They also have developed a slight puff. Kinda irritating. They still provide great power though. I want to try nanotechs but I need the hard case.

I saw a Gens Ace advertisement on youtube yesterday

Did anyone notice that HK got a bunch of Nano Tech batteries in the US warehouse now including the 6k and 6.6k 65 2s packs? I love GA but now that HP raised their prices and I really wanted something with higher capacity I couldn't help not to order two 6.6k packs from the US warehouse. I know that GA has a cult following but 57 bucks for a 5800 mah battery??? What happened to their reasonable prices? The Nano Tech 6600 were only 43 bucks a piece. Oh and my shipping cost was only 6 bucks for both.

Yup that is why I'm selling all my gens ace lipo's and switching over to Nano-techs.......... I just spent around 300 bucks from HK on stick and saddle pack nano's, gens ace would of cost me more if I tried to buy the same/similar ones.......

I think Hobbypartz/Nitro Models must keep having to raise their prices. Otherwise, it's hard to stay in business when you have no inventory to sell. Honestly don't know how they survived this long. Everything worth buying is always out of stock. Then you don't know what you're getting when you do buy from them. The new 5800s are on the ROAR approved list. They would instantly add value and probably sell them out if they could assure buyers that they come with the required ROAR approved sticker and the part numbers match the ones on the list. It would be an even bigger bonus if they came with Dean's style plugs instead of the stupid red tubes nobody uses.

I've had very good luck with the 40c 5000 GA packs I own. I was dissapointed with the 2 50c packs I bought more recently. There was nothing wrong with them except that the 40c packs out perform them both on a discharger and on the track and the part numbers don't match the ROAR approved list. HobbyPartz has worn me out having to look at their web site everyday and never finding what I'm looking for. They list a quad charger, a couple of metal gear servos, an amp meter, and more of the 40c batteries that I'd like to buy but are never in stock. It just makes me bitter looking for them. I think it's time to move on to a more reliable seller and just pay the extra dollars to get what I'm looking for. So much for saving a few bucks. It isn't worth the aggravation.

you get what you pay for,,,if you buy a cheap battery the masses of bashers will come but,,,they will soon realize that you always get what you pay for.

I think many people who over paid say this to feel better. Just like the expensive speaker wire, interconnect and power cable crowd of the audiophile world say. Its amazing how many people get ripped off by buying silver speaker cable or a 500 dollar 3 foot power cable and notice how the sound comes out of total blackness and how the sound stage totally expanded on depth. You get what you pay for is not a term I would ever use with lipo batteries in the RC field.

LOL Sergey. I'm amazed at the people who will pop down $60 on an HDMI cable that can be had at Amazon for $7.