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I see these batteries for sale in blue and white labels for the same price, is there a difference or just the color, thanks. Oct 21, 2013
The Blue version is old outdated stock. I got a good deal on 16 of the blue ones and they don't hold a candle to the Premiums. Tenergy currently makes two D cells, the Premium which is the best performance D cell available and the Centura which is designed for long term storage or low self discharge. Both are excellent choices, the blue version is older tech and not recommended unless they are very cheap. I use the Blue ones in my Mag lights and they don't last anywhere close to the Premiums, I won't be getting anymore blue ones, not worth the low capacity and poor shelf life. Stay with the Premiums, good voltage stability, durable, decent shelf life. If you want to store them as emergency cells, get the LSD type. They hold voltage much longer after months in storage.
I bought these for my Dad as a Christmas present. He waited 9 months to charge them. The Batteries were bad. Never got 1 use out of them. I would charge them. The same day they come in. Use them ASAP. Return them if you are not happy.
Can I use the Tenergy TN190-4 charger with these 10,000 mAh batteries, even though on the page for the charger it shows a max D range of 9000? Dec 28, 2013
you can use it. I bought one of them for use with those batteries but when I charged the batteries it said half of them were bad. the charger also quit charging batteries altogether after about a month. get yourself a maha powerex charger. it will charge your batteries to 10,000 mah. the maha charger charged the batteries that the tenergy said were bad.
I bought these over 2 months ago and after only one use, almost half of the battery says exhausted in the charger instead of being charged. Nov 19, 2014
Yeah, they are pure crap. Spend the money on better batteries. I learned from experience as well.
How are these different from the regular (not "premium") Tenergy D-size (UPC 844949002097)? The specs are the same: 10000mAh, up to 1000 recharges... Oct 20, 2013
Your guess is as good as mine. I've never own the non-premium tenergy batteries so I don't know how to answer your question properly. I can say that the set of Tenergy Premium that I purchased a year ago is still going strong. No sign/symptom of failure (not holding charges) at all. I would really RECOMMEND BUYING A HIGH SPEED CHARGER.
If the product is advertised to last for a 1000 charges and they fail after one or two charges (as per other reviews) isn't this fraud and doesn't that take president over Amazon's 30 day warranty? Nov 1, 2013
I'm not going to get political, but I haven't had any problems with these batteries, if that's what you're asking. I've probably got 25 or so charges on mine and they've been great, other than a misspelling on the side of the battery, "Caution: Battery can explore or cause burns if overcharged, disassembled or exposed to fire." No fun at all.
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