What voltage is boost?
A number of posts talk about boost charging voltage as being 14.4. My B&D 1093 charger routinely goes to 14.7. Is that too high? The way the charger works, initially the current is constant at 40 A...
Forum Discussion
No the 1093's temp adjusted voltage based on 14.7 or 14.8 is not too high. Just right for many batteries.
The 1093 does not have a "boost voltage" That term only applies to "
three-stage" converters which have three voltage levels.
The 1093 actually has a charge profile that gets the batteries to 14v and then it "trips" and amps begin to taper.
The voltage continues to rise while the amps taper,not reaching 14.8 till the amps are down to about 5amps or less, which is unusual but it works by keeping the tapering amps higher than they would otherwise be, so it all comes out even with a profile which gets to a set voltage (Absorption Voltage-Vabs) and hold that constant while amps taper from there.
Look at the VEC voltage line compared with its amps line on this ugly graph. (if you can find them :) ) The VEC is with three 35a Vectors doing a total of 105 amps approx, but the 1093 by itself does the same profile at its 40a
The 1093 does not have a "boost voltage" That term only applies to "
three-stage" converters which have three voltage levels.
The 1093 actually has a charge profile that gets the batteries to 14v and then it "trips" and amps begin to taper.
The voltage continues to rise while the amps taper,not reaching 14.8 till the amps are down to about 5amps or less, which is unusual but it works by keeping the tapering amps higher than they would otherwise be, so it all comes out even with a profile which gets to a set voltage (Absorption Voltage-Vabs) and hold that constant while amps taper from there.
Look at the VEC voltage line compared with its amps line on this ugly graph. (if you can find them :) ) The VEC is with three 35a Vectors doing a total of 105 amps approx, but the 1093 by itself does the same profile at its 40a
