Which part number model did you have issues with ?

Glad to hear that our little 5200-24C is still doing good for you.. I'm not going to say that every pack we have sold is perfect and I believe the factory we deal with that has been doing our packs since day one have learnt allot over the past 6 years. I can also say I have learnt allot as well and have implemented a good battery testing program to make sure we ship out packs that are at proper specs and free of defects.

As explained a few pages back when using higher mAh cells with lower IR the cases will distort and expand some as it's well known that Lithium cells expand under use. The problem is that factories are like racers where they try to beat the next factory. So to achieve higher mAh or lower IR you must make the cells bigger. In the case of the ROAR hardcase packs your limited to the case size. When we first started selling packs the cells wouldn't fill up the case. Now they use up the case to the max with no extra room for expansion under use. The thin 1 to 1.5mm plastic case isn't strong enough to keep the case from distorting.

I informed the factory that some customers are worried about this and think this is swelling/puffing and they told me that it's very hard to control the thickness of the cells from batch to batch but they will try and keep them a bit smaller in future batches. I told them that if they do remove some thickness of the cells that I hope this will not impact the IR as it has been very low in the last few batches.

So as you can see it's a fine line between performance and reliability and having a case stay flat. We did have some models in the course of the past 6 years that were not as reliable and we did replace many packs once we realized it . I guess our biggest mistake is always trying to offer the best performance possible and we work with a factory that has the same philosophy as we do.

SMC 4700mah 40C Marc Rheinard Edition

Where can you get those?

Wow that is an old model. We did have some issues with certain high end models at the time. This was the factories first attempt at pushing the limits to increase C rates and drop IR. One thing that is hard to figure out is if a model will have potential issues. The factory does all kinds of tests on a new formulation to try and see if the packs are reliable. It would make no sense for a high end factory to release packs they know would have issues. Even with all the testing we have had a few models that weren't as reliable as they should of been. The big problem we face is that Lipos are very easy to damage and there really is no way to know if the customer did the damage or it's due to a defect. In a perfect world where no one would lie and tell you exactly what they did we could handle issues allot easier. I think we all know that this isn't possible as we live in world where some don't want to be responsible for their actions. I can go on and on and explain all the stuff people tried to pull on me for warranties. Now we just can't do anything if a pack swells/puffs unless it's only one cell in the pack then this is considered a defect.

If some of you have been using Lipos in flight since the very beginning of Lipos you know that the first packs and for the first few years packs would swell allot as the formulations and materials simply weren't perfected. Now flight packs are very reliable if you buy them from a good factory. I believe same thing has happened with car packs. The factories have learnt what to do and what not to do.

You can try one of our packs now and I'm very confident that the line between performance and reliability has been achieved.

Hey i was looking at you battery conneters for the inboard battery. I was wondering where does the blue wire go to. i see the red and black goes to the battery but the blue im lost on.

Blue goes right between the positive and negative.....blue is the balance lead

I'm not worried at all about it. The 7200 has performed better and had less swelling than any other pack unlucky enough to be run in my conversion truck

The only way for me to avoid the pack from swelling is a larger case or 3 cell

si it connects to the charger then right.

Normally chargers have a balance board and when charging inboard 4mm packs you use an adapter that plugs into the pack the balance connector from the adapter to the balance board.

I had a brand new marc reinhart lipo 5200 50c and from the time i took it out of the bag to hook it up to the charger it wouldnt charge,called up smc and told them about it,took some pics of the new pack and i sent it back,4 days later i had a new one at my door,great customer service! eventually ill be trying the new smc packs.

i figured it out after watching some videos and zooming in on the pc the blue goes to the battery. i got to order a battery now if i pre order will i get it fast or is there a big wait. second thing i decided to go inboard lower ir right. so do i need to order the charger connecter to go the battery for deans then im not sure what else i need but the charger is on it way. im looking to get one before june 9. If not i will just get the saddle pack for now.

What model do you want to order ?

Inboard 4mm packs have the same IR as packs with wired packs with Deans or Traxxas.

for now i think i need one of those 6500 70c which ever one come with the better wires. i kinda droped more on the charger set up but im sure it worth it.