I've recelled several battery packs with 5x Panasonic HHR380A 4/3 Nimh Cells of 3800 Mah each.
The issue I'm having with my PB140,145,145B,160 is that the powerbook stops charging after exactly 2 hours ( original 2A recapped PSU calibrated at 7.5volts )
It's impossible that the batteries are fully charged. They don't last long too: battery power, everything on, gives me 1.5 hours at most.
The charging system of these powerbooks appears to be based on constant voltage ( tested with current meter on DC input ): it even never draws more than 1.1Amps from the PSU and during the 2 hours of charging it decreases to 0.5 Amps and then charging stops.
The original Apple battery pack was build with Nicad batteries ( 2400 mah capacity )
Maybe the system is not designed for charging Nimh batteries properly ?
I'm wondering if other members here have similar issues.
What capacity of cells did you use and how long does the powerbook charge them until the battery indicator says they are full ?
How much running time do you get with everything on after fully charged ?
The issue I'm having with my PB140,145,145B,160 is that the powerbook stops charging after exactly 2 hours ( original 2A recapped PSU calibrated at 7.5volts )
It's impossible that the batteries are fully charged. They don't last long too: battery power, everything on, gives me 1.5 hours at most.
The charging system of these powerbooks appears to be based on constant voltage ( tested with current meter on DC input ): it even never draws more than 1.1Amps from the PSU and during the 2 hours of charging it decreases to 0.5 Amps and then charging stops.
The original Apple battery pack was build with Nicad batteries ( 2400 mah capacity )
Maybe the system is not designed for charging Nimh batteries properly ?
I'm wondering if other members here have similar issues.
What capacity of cells did you use and how long does the powerbook charge them until the battery indicator says they are full ?
How much running time do you get with everything on after fully charged ?
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