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11-15-2004, 04:45 PM
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Question About mAh and EBAY BATTERIES
What the heck is an mAh? I am looking for a back-up battery for my Panasonic PV-Gs200. I was looking around in e-bay and have noticed different sellers having different mAh's. Does this affect the battery life in any way? and if it does, does this mean that the higher the mAh the longer the battery life? I really don't care if it's generic or not. As long as it gives me power for more than the time the original battery that the Camcorder came with.
Some say 1500 mAh and others say 3700 mAh and 2040 mAh and others. I am looking at the Panasonic CGA-DU21 and some sellers sell different generic batteries with different mAh's. What is this? and Does this affect anything with the battery? Thanks..oh and here's the one i was looking at.
http://cgi.ebay.com/ws/eBayISAPI.dl...3852710513&rd=1
http://cgi.ebay.com/ws/eBayISAPI.dl...3852067666&rd=1
^^^^Check this seller out. Is this battery really compatible with both Pana Pv-Gs200 and PV-GS400? I thought the batteries were different.
http://cgi.ebay.com/ws/eBayISAPI.dl...3852039898&rd=1
Thanks for any info or comments. Please tell me if you have had any experience with these buyers on ebay as well! I need to know who i can trust or i can't!! Thanks!!
Last edited by camerakid : 11-15-2004 at 04:47 PM.
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11-15-2004, 07:00 PM
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hi camerakid,
i was just about to post the same question, only for the optura 40. hopefully, we will have an answer soon.
indera
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Originally Posted by camerakid
What the heck is an mAh? I am looking for a back-up battery for my Panasonic PV-Gs200. I was looking around in e-bay and have noticed different sellers having different mAh's. Does this affect the battery life in any way? and if it does, does this mean that the higher the mAh the longer the battery life? I really don't care if it's generic or not. As long as it gives me power for more than the time the original battery that the Camcorder came with.
Some say 1500 mAh and others say 3700 mAh and 2040 mAh and others. I am looking at the Panasonic CGA-DU21 and some sellers sell different generic batteries with different mAh's. What is this? and Does this affect anything with the battery? Thanks..oh and here's the one i was looking at.
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11-15-2004, 08:57 PM
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Join Date: May 2004
Location: New Mexico, USA!
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"mAh" is milliampere hour. It relates to the amount of power the battery will deliver. A larger number means the battery will run your camcorder longer (under the same conditions). That is assuming the seller is not exaggerating the battery capacity. Most manuals will have some rating of recording time on a fully charged battery for different model batteries.
Rich
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11-16-2004, 04:32 PM
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Thanks for responding. I was getting worried that no one knew what it meant. So, I guess i should look for the bigger and better mAh's. I hope i can find one on ebay.
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11-17-2004, 04:41 AM
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hi poncho,
thank you for explaining this term.
this does help me understand why i've seen a variety of prices on ebay for what appears to be the same battery, <based on the battery model number>.
could you tell me what you think the miniumum mAh number one should purchase?
thanks again.
indera
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Originally Posted by poncho
"mAh" is milliampere hour. It relates to the amount of power the battery will deliver. A larger number means the battery will run your camcorder longer (under the same conditions). That is assuming the seller is not exaggerating the battery capacity. Most manuals will have some rating of recording time on a fully charged battery for different model batteries.
Rich
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11-17-2004, 01:28 PM
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Location: New Mexico, USA!
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I normally carry two Sony NP-FM50 batteries with me which are 1180 mAh each. Each one will give me more than over an hour of recording on my Sony TRV460 or Sony HC40. Those are the smallest batteries Sony normally sells. I have gotten up to 50 minutes of recording with the smaller NP-FM30 batteries which are 720 mAh. I have never used a generic battery.
Rich
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11-17-2004, 07:57 PM
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I bought two 2200 mah 'fake' batteries off ebay about 4 months back. They were $50 together as opposed to $100+ for the actual sony battery of the same rating.
Unless it comes in the actual manufacturer's packaging it is considered a fake and is probably of korean origin. Obviously anything korean is not going to be coming from a factor with the same quality control.
Personally I think these batteries were well worth it in my case. I got 2 for ½ the price of one. Thats about 25% of the original price! They achieve probably 3/4's or higher of the time I expected them to under normal conditions. But since you have two you still have more recording time than a single 'real' battery. The only problem I have had with these batteries is that they seem to lie to the infolithium sensor. Although they will record pretty close to the time they should they will always display the amount left in the batter (in minutes) wrong. Usually I will start out with 240 minutes or so and it will slowly fall over the next 3-4 hours until it gets to about 120 minutes or so and then suddenly "Change battery pack will begin flashing on the screen." So there really is no warning that they are about to give out even though you are getting close to full recording time for them.
They are not equivalent to the ultra-expensive sony's, but if you don't mind their nuances and saving an assload of money at the same time I say go for it!
Last edited by bgreenlee : 11-17-2004 at 08:01 PM.
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11-21-2004, 11:18 PM
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"Fake" batteries
My own 2 cents, I bought some "fake" batteries for my Nikon still camera and they were very cheap! ($20.00 for two), and the were JUNK! They literally lasted about 10 minutes a piece. The company even replaced them, and they still stunk! I am reminded of two sayings: 1. Buyer beware 2. You get what you pay for
Good luck 
-Joel |
11-23-2004, 06:03 AM
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hi rich,
i saw these batteries on ebay and wondered if you think i should buy them or keep looking?
http://cgi.ebay.com/ws/eBayISAPI.dl...709523&tc=photo
thank you
indera
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Originally Posted by poncho
I normally carry two Sony NP-FM50 batteries with me which are 1180 mAh each. Each one will give me more than over an hour of recording on my Sony TRV460 or Sony HC40. Those are the smallest batteries Sony normally sells. I have gotten up to 50 minutes of recording with the smaller NP-FM30 batteries which are 720 mAh. I have never used a generic battery.
Rich
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11-23-2004, 06:08 AM
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elmsley,
this is what conerns me. i saw batteries that were 2 for $5. other people here have stated that they bought these batteries and didn't have a problem.
like you, i tend to lean towards, you get what you pay for.
did you buy your batteries on ebay? a concern i have about buying on ebay is that if something is wrong with the product, that i will have a hard time returning it. any advise would be greatly appreciated.
thank you
indera
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Originally Posted by elmsley4
My own 2 cents, I bought some "fake" batteries for my Nikon still camera and they were very cheap! ($20.00 for two), and the were JUNK! They literally lasted about 10 minutes a piece. The company even replaced them, and they still stunk! I am reminded of two sayings: 1. Buyer beware 2. You get what you pay for
Good luck
-Joel |
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11-25-2004, 03:52 PM
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Junior Member
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Join Date: Aug 2004
Posts: 26
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Fake Batteries
I have bought batteries for my GS400 from an EBay buyer. I only buy genuine Panasonic batteries and get them for about half the retail price from Singapore. Delivery time was about a week. If you serch EBay, You can find Panasonic batteries for a reasonable price.
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11-26-2004, 09:56 PM
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Join Date: Oct 2004
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hi cammie,
i've looked on ebay for genuine canon batteries, but haven't seen any. do you know if the seller your bought your genuine panasonic batteries carriers canon batteries?
any help would be greatly appreciated.
thank you.
indera
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Originally Posted by Cammie
I have bought batteries for my GS400 from an EBay buyer. I only buy genuine Panasonic batteries and get them for about half the retail price from Singapore. Delivery time was about a week. If you serch EBay, You can find Panasonic batteries for a reasonable price.
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05-19-2005, 03:55 AM
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Quote:
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Originally Posted by bgreenlee
The only problem I have had with these batteries is that they seem to lie to the infolithium sensor. Although they will record pretty close to the time they should they will always display the amount left in the batter (in minutes) wrong.
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I reckon this is due to the voltage rating. I've noticed that most of the aftermarket batteries have a slightly reduced voltage e.g. 7.2V instead of 7.4V. I would expect the infolithium sensor to measure the output voltage of the battery under different battery loads (e.g. display only, tape mechanism on) to calculate the remaining battery capacity. If the output voltage is less than expected for the same remaining battery capacity, I suspect this will screw up the calculation. |
05-19-2005, 10:05 AM
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There are a variety of chemical compositions used in Lithium-Ion batteries which the manufacturers try to keep to themselves. This may affect the open circuit voltage. Most camcorders are typically rated for 7.2 Volts to 7.9 Volts DC. It is common to see 7.2 and 7.4 batteries. The quality and performance of the battery will be how it's constructed not so much if it's 7.2 or 7.4 volts.
The circuitry in the "InfoLithium"battery pack communicates with the camera to determine the remaining battery charge. I suspect the generic batteries do not use the same circuitry.
Rich
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