New informations about the new charger(s):
Charging times comparision table:
K-BC90
...=
-.-400
.mA @ 8.4V
.= 5.3 h charging time ("up to 320 minutes", source:
Pentax K-01 manual; "in about 390 minutes", source:
ricoh-imaging.co.jp/english/products/k-1-2/accessories/index.html)
D-BC177 =
.800? mA @ 8,4V = 4.5 h charging time (4.5 hours without the Pentax USB Type-C cable)
K-BC177 = 1500 mA @ 8,4V = 2.5 h charging time (1500mA, source:
ricoh-imaging.eu/de_de/battery-charger-d-bc177-1#product-specifications)
AC-Ux
..-.-= 1000 mA @ 5V
....= 4.5 h charging time (1000mA, source:
ricoh-imaging.co.jp/english/support/man-pdf/k-3-3.pdf#page=42)
The D-Li90 battery has 1.860 mAh at 7.2V = 13,392 Wh capacity.
With the "old" K-BC90 charger a complete charge can take 5.3 to 6.5 hours.
The K-BC177 consists of the D-KBC177 charger itself and the K-AC166 AC Adapter (
5V@3A, 9V@3A and 12V@3A)
Originally posted by stevebrot There are a couple of things one might add that contribute to poor battery performance. They include:
- Heavy AF use
- Long exposures...it takes energy to hold the mirror up
- MLU
- Live view
- Video shooting
- Interval shooting using the internal drive mode
- Excessive SD card writes (save, delete, format)
- Manual focus using live view
- Fiddling around with the camera that does not involve actual exposures
- Use at high or low temperature extremes
Some guy did measurements with his Canon 1Ds Mark II several years ago:
Current-.Function
800 mA
....Release including shutter clamp
260 mA
....Card writing with display active
260 mA
....deleting pictures
230 mA
....Card writing
220 mA
....powering on
190 mA
....Pressed shutter button
170 mA
....Display active
053 mA
....Standby
018 mA
....powered off
018 mA
....powered off with AC adapter attached
.0.2 mA
....powered off with battery inserted
.0.2 mA
....auomatically powered off with inserted battery
Source:
zoo-fotografie.de