On Sun, Aug 8, 2010 at 12:34 PM, eckinator <[email protected]> wrote: > Dunno if thoser readings are indicative of anything at all, my > understanding is that some devices simply measure voltage and convert > to charge according to a proprietary formula - for example, I have two > LED helmet lamps, one a Chinese NiteFox unit, one a Petzl TacTikka XP+ > and the Petzl runs several hours on full power with a set of 3 AAA > rechargeables discarded by the NiteFox as empty... > Ecke >
Battery meters run off a voltage reading for batteries not equipped with electronics. Setting the voltage levels that correspond to near-empty and empty is arbitrary and also depends on the draw of the device. Since NiMH's and Lithium disposables have different maximum voltages and discharge curves than the Alkaline AA's which most such meter's are calibrated for there can be some extreme variation in actual vs reported battery charge. -Adam -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
