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01-11-2012, 01:53 AM   #1
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kx with rechargeable lithium battery

I recently ordered some rechargeable lithium batteries from ebay, which has a nominal voltage 3.7V(measure 4.0V)
but it won't work on my Kx even I uploaded the latest firmware 1.02.
it doesn't work with either setting(auto or Li) on the camera
It works with the non-rechargeable lithium battery(1.7Volt)
Does anyone have similar experience?

01-11-2012, 02:25 AM   #2
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QuoteOriginally posted by tenny52 Quote
I recently ordered some rechargeable lithium batteries from ebay, which has a nominal voltage 3.7V(measure 4.0V)
but it won't work on my Kx even I uploaded the latest firmware 1.02.
it doesn't work with either setting(auto or Li) on the camera
It works with the non-rechargeable lithium battery(1.7Volt)
Does anyone have similar experience?
K-x is not specified to work with rechargeable lithium batteries. See the manual, page 39, second bullet point. The voltage is a lot higher than the camera is designed for. You're lucky you haven't fried the electronics.
01-11-2012, 02:27 AM   #3
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What brand of batteries where they? The only batteries you should be using are Sanyo Eneloops. And stay away from ebay when it comes to batteries and memory cards, there are too many knockoffs sold there. Buy through reputable dealer like Amazon, Costco also has them. Don't forget a smart charger like a Lacrosse, here's a link http://www.amazon.com/Crosse-Technology-BC-700-Battery-Charger/dp/B000RSOV50...6273951&sr=8-1
01-11-2012, 02:46 AM   #4
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Moved from Forum Suggestions, News and Help.

01-11-2012, 04:29 AM   #5
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AA-type rechargable lithium, or CR-V3 type?
01-11-2012, 08:41 AM   #6
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QuoteOriginally posted by Roob-N-Boots Quote
What brand of batteries where they? The only batteries you should be using are Sanyo Eneloops. And stay away from ebay when it comes to batteries and memory cards, there are too many knockoffs sold there. Buy through reputable dealer like Amazon, Costco also has them. ....
+1000 here. There are lots of fake batteries and SD cards on the market. The voltage that the OP quoted is way high and hopefully the protection that Pentax built into the circuits protected the camera. Eneloops are your friends, buy many.
01-22-2012, 08:58 PM   #7
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QuoteOriginally posted by Roob-N-Boots Quote
Don't forget a smart charger like a Lacrosse, here's a link Amazon.com: La Crosse Technology BC-700 Alpha Power Battery Charger: Home & Garden
What is a smart charger?
01-23-2012, 07:59 PM - 1 Like   #8
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QuoteOriginally posted by Texas Transplant Quote
What is a smart charger?
A smart charger is one that senses when the battery is fully charged and terminates the charge. In contrast, a dumb charger is one that just charges for a predetermined period of time. If the battery is not fully discharged, a dumb charger will overcharge it. Smart chargers look for signals like a very slight drop in voltage that occurs when the cell is fully charged, or a rapid rise in temperature that occurs once overcharging begins. For either of these signals to be reliable, the charge rate must be fast enough that a full charge takes 2 hours or less. Charging faster than about an hour is also bad. By the time the terminating signal is received, a substantial overcharge may have already been delivered. So 1-2 hours charge time is the sweet spot.

A good charger will also charge every battery individually, instead of in pairs. Sometimes one battery goes bad, and if you're always charging in pairs this will either undercharge one battery or overcharge the other or both.

It's cheaper to build a dumb charger that charges in pairs, so most places that cater to unknowing customers who select the cheapest charger on display (including big stores with even less knowledgeable sales staff) will only have non-ideal chargers to pick from.

See here for an overview of suitable chargers.

01-24-2012, 06:37 AM   #9
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Thanks for that response. That was very helpful.
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