Turnigy nano-tech 4500mAh 4S 45 ~ 90C Lipo Pack de

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Customer Rated

Mar 21, 2016

I have purchased 6 of these in the past year and cycled them around 10 times each. When new, they balanced out real nice. After only a handful of cycles, 2 of them have lost a cell, and will not balance. Yesterday I took the others out for test day, and 3 out of 4 puffed, and I assume the lost a cell that caused unusual drain, hence the puffing. I use the batteries in "P Limited" class NAMBA race boats, and we do push the limits of amp draw, but that is way to high of a failure rate. They say they are rated at 45 to 90c but I suspect that is way high. Our boats run around 60c to 100c bursts and these batteries come nowhere close! I have had better luck with 4000mah and 5000mah and lower c rated packs, this series just seems to be wonky. Too bad because they were very affordable.

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Customer Rated

Jul 28, 2015

I bought 8 of these batteries for my TREX 500 fitted with a Funky A109 fuselage. They are a perfect match for the model and give me around 14 minutes flight time although I expect for that to drop to 10 minutes after prolonged cycling.The same batteries also fit in my radjet giving me 7 minutes at flight speeds of 122 mph which by the way was measured using a police speed trap gun.

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Certified Buyer Rated

Nov 02, 2014

Those Nanotechs can't be beaten for their high quality at this level of price. Remain very well balanced over time. Go for it!

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Certified Buyer Rated

Sep 16, 2013

Fits perfectly in my TBS discovery and it holds it charge very well!

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Customer Rated

Aug 02, 2013

Well at least it didn't take months but the ripoff is complete. Purchased 2 of these. One was perfectly fine, the other has a cell that wont balance. Cell 1 is at 3.86 after the first balance and the others are at 4.23, 4.26, 4.24.
After discharging and re- balancing they got somewhat closer but not much. The pack will not charge to 16.8 without overcharging three cells. Sent a video of this to HK and they say the pack is not faulty. So now I get to keep a pack that might last 1 or two runs before cell 1 is gone. Needless to say that was my last purchase ever here. It was only my second in a year but I was about to start spending more here. I will eat that $57.43 for the cost of this lesson. At least venom/atomik will replace defective equipment when you provide the necessary showing it.

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Customer Rated

Apr 04, 2012

very good battery pack. I use it with a HK500 helicopter and Turnigiy 500 H3126 brushless motor with 1600kv. Further I use a Turnigy Brushless ESC 85A w/ 5A SBEC. There is enough power for about 20-25 minutes flight. It remains 30pcnt of battery capacity after this time. Excellent !

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Customer Rated

Mar 28, 2012

Well, I'm nearly 3 months into a simple return and HK couldn't be any slowly. Absolutely the worse customer service I've ever experienced. Can't get a straight answer to easy questions. They comment I've been credited but it never appears. Defintely have lost a good customer.

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Customer Rated

Feb 10, 2012

BEWARE! Purchased two and both had one cell that would not balance. After several discharges and rechanges they got close. After one run up on an EDF one cell on one of the batteries failed - read zero. Sending back for warranty. Will report back how HK handles it.