Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 51,575
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- Central florida
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- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
</font><font color="blue" class="small">( Chris, I never mentioned any shunt loading for discharge
Nor did I, I'm talking about tapping the trigger down until the batteries are dead
)</font>
Draining the battery thru the motor coil is much different than a shunt load... I think of a shunt load as a large copper bar dropped across the terminals...
</font><font color="blue" class="small">( And just for clarification.. we are not talking about a high current discharge.
High current discharge in my mind is at a 5C to 10C rate and this is pretty much what a power tool load is.
)</font>
Again.. huge difference between letting a tool run unloaded.. and levaing it running under load..
</font><font color="blue" class="small">( Just seen too many instances where that gives reduced performance
How would you distinguish this reduced performance from improper charging?? NiCd battery problems are primarily attributal to cheap cells, abusive use and improper charging.
)</font>
Can't argue about the cheap cell issue.. I agree with you. However the abuse and chraging issues.. well.. The references I was making were to nicads in my use. I don't 'think' they were abused.. and as to improper charging.. I generally follow what's in the manual.. and hope the manufacturer really specced it out and is not using boilerplate instructions.
</font><font color="blue" class="small">( Maybe like Santa, the tooth fairy, the great pumpkin and bigfoot it is more fun to believe. I'm gone )</font>
That's not an apples to apples comparison.. one is theory.. one is emperic evidence.
I've never met either of the 4.. however.. I have seen with my own eyes and test equipment degrade performance from nicads, depending on the charge and use habits of the user.
Soundguy
Nor did I, I'm talking about tapping the trigger down until the batteries are dead
)</font>
Draining the battery thru the motor coil is much different than a shunt load... I think of a shunt load as a large copper bar dropped across the terminals...
</font><font color="blue" class="small">( And just for clarification.. we are not talking about a high current discharge.
High current discharge in my mind is at a 5C to 10C rate and this is pretty much what a power tool load is.
)</font>
Again.. huge difference between letting a tool run unloaded.. and levaing it running under load..
</font><font color="blue" class="small">( Just seen too many instances where that gives reduced performance
How would you distinguish this reduced performance from improper charging?? NiCd battery problems are primarily attributal to cheap cells, abusive use and improper charging.
)</font>
Can't argue about the cheap cell issue.. I agree with you. However the abuse and chraging issues.. well.. The references I was making were to nicads in my use. I don't 'think' they were abused.. and as to improper charging.. I generally follow what's in the manual.. and hope the manufacturer really specced it out and is not using boilerplate instructions.
</font><font color="blue" class="small">( Maybe like Santa, the tooth fairy, the great pumpkin and bigfoot it is more fun to believe. I'm gone )</font>
That's not an apples to apples comparison.. one is theory.. one is emperic evidence.
I've never met either of the 4.. however.. I have seen with my own eyes and test equipment degrade performance from nicads, depending on the charge and use habits of the user.
Soundguy
