Battery Longjevity at

Go Back   DV Info Net > The Tools of DV and HD Production > Open DV Discussion

Open DV Discussion
For topics which don't fit into any of the other categories.

Thread Tools Search this Thread
Old May 5th, 2009, 12:41 PM   #1
Regular Crew
Join Date: Feb 2009
Location: Australia
Posts: 119
Battery Longjevity

How does one store their batteries? My battery manual says a 90% charge is optimum storage for a night, and 50% charge for long periods of time. Does this accurately describe the charge requirements to save the life of your battery? or does it sound phooey?

I am using an Sony XDCAM EX, but I suppose it is a lithium ion like most batteries.
Glynn Morgan is offline   Reply With Quote
Old May 6th, 2009, 09:45 AM   #2
Inner Circle
Join Date: Aug 2005
Location: Atlanta/USA
Posts: 2,502
Storage temperature and charge

Storing a Li-ion battery at the correct temperature and charge makes all the difference in maintaining its storage capacity. The following table shows the amount of permanent capacity loss that will occur after storage at a given charge level and temperature.

Permanent Capacity Loss versus Storage Conditions Storage Temperature
40% Charge 100% Charge
0 C (32 F) 2% loss after 1 year 6% loss after 1 year
25 C (77 F) 4% loss after 1 year 20% loss after 1 year
40 C (104 F) 15% loss after 1 year 35% loss after 1 year
60 C (140 F) 25% loss after 1 year 80% loss after 6 months

It is significantly beneficial to avoid storing a lithium-ion battery at full charge. A Li-ion battery stored at 40% charge will last many times longer than one stored at 100% charge, particularly at higher temperatures.[28]

If a Li-ion battery is stored with too low a charge, there is a risk of allowing the charge to drop below the battery's low-voltage threshold, resulting in an unrecoverable dead battery. Once the charge has dropped to this level, recharging it can be dangerous. Some batteries therefore feature an internal safety circuit which will prevent charging in this state, and the battery will be for all practical purposes dead.[citation needed]

In circumstances where a second Li-ion battery is available for a given device, it is recommended that the unused battery be discharged to 40% and placed in the refrigerator to prolong its shelf life. While the battery can be used or charged immediately, some Li-ion batteries will provide more energy when brought to room temperature.

From Wikipedia
Ervin Farkas, CDVS
Certified Legal Videographer
Ervin Farkas is offline   Reply With Quote
Old May 7th, 2009, 12:17 PM   #3
Major Player
Join Date: Jul 2005
Posts: 542
I think a visit or an e-mail to your battery manufacturer might be a more accurate source than a general info LI-ion page on Wikipedia.

For example, here is the IDX PDF on how to store batteries:
Bill Ward is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

Omega Broadcast
(512) 251-7778
Austin, TX

(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

(800) 238-8480
Glendale, CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > Open DV Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search



All times are GMT -6. The time now is 02:03 AM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2015 The Digital Video Information Network