Revolectrix

[srislash]

Thanks tlandauer.
As we know, there are advancements in technology at scary rates, so things are probably a little different with other manufacturers. I have no doubt that some manufacturers read threads like this, so it would be good if these people "in the know" dropped in with their take on it all.
Another interesting piece of advise I was given by "our" LiPo manufacturer was to store them in a refrigerator at 5 or so degree's C when not in use. They also said it was fine to store them fully charged this way, so I have been doing this for years, without any problems at all.
I also have a small 12V car cooler/heater which I have fitted a thermostat set at 30 degrees C. It is also plugged in to a mains power timer set to turn on two hrs before I expect to leave the next day, so the night before I am going flying/boating, I place all the LiPo's I'll need in this cooler/heater, and by the time I load the car the batteries are ready; I just pick it up and put it in the car. It stays warm most of the day, and I have put strips of velcro along the outside of it, so my used LiPo's get stuck to that. No confusion, and still just one box to carry!!!.
Like I said though, I'm no LiPo expert, but this advise has worked for me...

This is all great info, thank you and I'm glad you mentioned the refrigerator for long time storage. May I add to cycle the packs a few times when bringing them back to use.

[Brushless55]

There is no doubt that pre heat Lipo batts improve performance and decrease IR so for this task this is what you need: http://www.hobbyking.com/hobbyking/s...g_12v_DC_.html
I've been using this gadget when temps are below 25C.Gill

When HK released this for sale, I thought this is a great idea, but it has a minor fault. To give the batteries good heat soak, you would probably need a few of these warmer bags to do all the LiPo's; meaning it's just not big enough. This of course depends on how many LiPo's, and of what size, you take with you. Hence why I like my Cooler/warmer as it has a 14 litre capacity and fits all my LiPo's I need for the day.
The HK warmer is still good though...

Oh man!!
With winter right around the corner, these would be great to warm up my packs at the flying field !

[IRON-PAWW]

The topic of storing fully charged lipos in refrigerators has come up before. The wisdom of doing it has been seriously questioned before. I fully admit though, that I am very much a layman when it comes to lipo tech, so I just go by what I read from the online community. So I've seen people strongly claim it's a bad idea, and others say it's fine. I've done it and had no issues I have to say - but stopped ...... I think on advice gained from this very forum. So at the end of day the real truth of the practice remains a mystery. Interesting though if manufacturers are saying it works well........

[Pitts]

The topic of storing fully charged lipos in refrigerators has come up before. The wisdom of doing it has been seriously questioned before. I fully admit though, that I am very much a layman when it comes to lipo tech, so I just go by what I read from the online community. So I've seen people strongly claim it's a bad idea, and others say it's fine. I've done it and had no issues I have to say - but stopped ...... I think on advice gained from this very forum. So at the end of day the real truth of the practice remains a mystery. Interesting though if manufacturers are saying it works well........

This is very true. I would not have treated my LiPo's this way if it was not direct advise from the manufacturer. Here's an interesting fact that happened to me; I started building a 10 cell aircraft and purchased 4 x 5 cell LiPo packs to power it. I had charged all packs to 100%, and thought I had stored all 4 packs in my "LiPo" refrigerator. I had lost interest in the build, but 4 years later I decided to finish the model and removed the mostly built fuselage from the rooftop shelf. In it I found two of the packs in the battery compartment!!! I quickly tested them to find they were still reading 96%. I then rifled through the back shelf of the refrigerator and got out the other 2 packs, which tested at 99% (Bare in mind these had not been used in 4 years also). That was 2 years ago, and I still use all these packs in that finished model, but an interesting note is that the 2 packs left in the model (not refrigerated) have 1 cell each that looses capacity over time, and I have to cycle them before use. The originally refrigerated packs hold perfect charge.
With that experience in hand, and due to the advise from the manufacturer (which I have now been doing for 14 years with no problems), I will continue with the refrigerating at 100% charge technique. Let me stress that I am not saying this is right or wrong, and that everyone should do it, I'm just stating my experience and what I am happy doing. I would love to hear from other manufacturers about their thoughts though...

[kevinpratt823]

Any feedback on more extreme low temp storage? As in 10-32 degF? I have considered storing my boat packs out in the shed for the winter, not sure if the very cold temps would be an issue though........

[royalcasa]

Let me know how you like them....btw, a guy on here got a set to try in his shocker and it picked up 8mph over his current batteries!

KFX, i will be building a CF SHOCKER, what battery did he get for his Shocker. Looking to put the battery in the sponsons, i dont think there's room for 6s battery. Thanks

[flraptor07]

Any feedback on more extreme low temp storage? As in 10-32 degF? I have considered storing my boat packs out in the shed for the winter, not sure if the very cold temps would be an issue though........

Cold storage is ok but I'm pretty sure freezing them is a bad thing....

[royalcasa]

My batteries are now stored in the refrigerator, at 3.85
Lots of good information. Thanks

[Peter A]

I made a new thread but it got moved to seller feedback, but I wanted to add it to this thread.

Last month I ordered a pair of 2s 5500 70c packs and when I opened the box I discovered that they had 12swg wires instead of 10swg. I pm'd revojohn and then sent him an email with picture. The response, "shoot, I'll send you some more".
The replacements turned up today and I am a very happy customer. Thankyou to John and Revolectrix for looking after your customer so well. Absolute tops! I can not only recommend the product but the after sales service as well.

[Doby]

I made a new thread but it got moved to seller feedback, but I wanted to add it to this thread.

Last month I ordered a pair of 2s 5500 70c packs and when I opened the box I discovered that they had 12swg wires instead of 10swg. I pm'd revojohn and then sent him an email with picture. The response, "shoot, I'll send you some more".
The replacements turned up today and I am a very happy customer. Thankyou to John and Revolectrix for looking after your customer so well. Absolute tops! I can not only recommend the product but the after sales service as well.

Great service....but, brings Quality Control into serious question though................

[kfxguy]

KFX, i will be building a CF SHOCKER, what battery did he get for his Shocker. Looking to put the battery in the sponsons, i dont think there's room for 6s battery. Thanks

His was on 8s. 5500 silver series

[kfxguy]

Great service....but, brings Quality Control into serious question though................

people do make mistakes...what counts is what they do to rectify it. I think John does a great job of taking care of his customers (from what i've read....I've never had an issue yet)

[Doby]

Did John really "invent" LiPo batteries??? Says so on his Web Page.

"EXCLUSIVE WORLD FIRST - Blend427
John Grzan (REVOJohn on the forums) has done it again! It has taken a while but since he first developed RC LiPO batteries in 1994 ......................."

[Peter A]

Great service....but, brings Quality Control into serious question though................

Just to add, John replied to my pm and email within minutes, which is pretty awesome seeing as we are in different parts of the world! Yep someone must have had 'Mondayitis' with the wires but hey, we all screw things sometime. Anyhoo my glass is half full...

[Doby]

I get the screw up and great that he fixed it...good for him

Now, did he invent LiPos????