Cadwell Cream of the Crop  7,333 posts Likes: 2 Joined Jan 2004 Location: Hampshire, UK More info | Jul 21, 2004 15:03 | #16 Both batteries come out of my 10D BG equally drained. Glenn
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KennyG Goldmember  2,252 posts Likes: 1 Joined Aug 2003 Location: Leeds, UK More info | Jul 21, 2004 15:11 | #17 The stronger battery is always used first until flat and then the second battery. They do not discharge in parallel. Ken
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RDKirk Adorama says I'm "packed."  More info | Jul 21, 2004 16:26 | #18 drisley wrote: ="drisley"]I was wondering something... Does the 300D or 10D battery grip use each battery at the same time, thus wearing them out at the same time? Or does it use one battery, then when it's dead, switch to the other battery. If it's the latter, does anybody know which compartment is used first? Too much time on my hands methinks. "When 2 BP-511 battery packs are installed in the BG-ED3, the camera draws from the battery pack with the higher voltage level first until it equals the level of the other battery pack, then both packs are drained simultaneously. TANSTAAFL--The Only Unbreakable Rule in Photography
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Canuck Goldmember 1,592 posts Joined May 2003 More info | Jul 21, 2004 16:57 | #19 Cadwell wrote: Both batteries come out of my 10D BG equally drained. Canuck You gonna be using the 120-300mm f/2.8 at Farnborough? The way the cloud base has been here the last few days you're going to need it! (I live about 5 miles from Farnborough). I may trot over there at the weekend and take some shots. PM sent.
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Jul 22, 2004 01:17 | #20 c0ntr0lz wrote: drisley as much as you pushed me to get it, I thought you had it!!!! Yes, I've had the grip for many months! EOS R6 Mark II - Sigma 50/1.4 Art - Sigma 14-24/2.8 Art - Canon EF 70-200/2.8L Mark III - Godox Xpro-C - Godox TT685C x2
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theoldmoose Senior Member 294 posts Joined Nov 2003 More info | Jul 23, 2004 14:54 | #21 JoeTampa wrote: And that would argue against a simple parallel arrangement since a stronger battery would discharge into the weaker battery until they were both equal. The way Canon apparently did it is smarter. Not at all. These are Li-Ion batteries and require a dedicated charging circuit to handle them. I wouldn't presume that hooking a charged Li-Ion cell in parallel with a discharged one would affect the discharged cell in any way.
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karusel Goldmember  1,452 posts Joined Nov 2003 Location: Location: Location: More info | Jul 23, 2004 15:57 | #22 I think the same as KennyG... 5D and holy trinity of primes. Now the 90mm TS-E TS-E fly bit me. I hate these forums.
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