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09-17-2017, 07:14 PM   #16
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One reason to have backup battery was to avoid the nuisance need to Re set date/time after charging.
But l think this is solved with newer
bodies.
When I get home I will recharge the KS-1 from quarter to full and if the date/time stays up, I will not really need a backup battery for my usage.

09-18-2017, 10:51 AM   #17
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QuoteOriginally posted by wombat2go Quote
One reason to have backup battery was to avoid the nuisance need to Re set date/time after charging.
But l think this is solved with newer
bodies.
If your clock battery is weak, that is definitely a good rational for having a battery to swap in. Neither my K10D nor my K-3 developed that problem, but it is not unknown.


Steve
09-19-2017, 07:50 AM   #18
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Charging with the D_BC109 charger:
The K-S1 manual states an approximate recharge time of 240 minutes ( 4 hr) .
After charging for a bit over 4 hours and re-inserting the battery,
the date/time was still running.
So I will try to use this camera with just one battery.
09-19-2017, 07:54 AM   #19
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I definitely think the life span of off brand (I've used Watson and Wasabi) batteries wasn't as long as Pentax brand. I have no idea why, but initially the off brands held a charge as long as Pentax batteries, but within six months they would be maybe half as long and within a year were hardly worth putting in the camera. Over time that's about six off brand batteries and similar number of Pentax batteries (all of the Pentax batteries are still in service none of the off brand ones are). For what it is worth, I used the same Pentax charger with all of them.

01-23-2018, 08:36 PM   #20
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Apparently I spoke too soon. One of the Wasabi that fits the Sigma DP1 has gone bad. It started swelling in the camera and was a little difficult to remove. Battery is over 3 years old.
Thanks,
barondla
01-24-2018, 02:40 PM - 1 Like   #21
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I use a few very cheap (about 3.5 USD) batteries from my local store interchangeably with original batteries. I do not use them very often but after a 2-4 years of use, I did not notice a very noticeably significant difference between them.

In my opinion, the most important is buying fresh batteries and not keeping them too long in unloaded state because it is very disadvantageous for Li-ion batteries.

In this way, I destroyed one an almost new Sony battery (original so definitely good quality) after it had been discharged for nearly a year.

Last edited by bladawiec; 01-24-2018 at 02:49 PM.
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