I forgot the discontinuation year which was 1997. So my comment about
what kind of NiMH cells were in use in 1998 probably should have said 1995.
Chuck Norcutt
Chuck Norcutt wrote:
> I looked for a battery but couldn't find one. IBM says it was
> discontinued in The specs for the battery and charger can be found in
> the IBM sales manual which is captured here.
> <http://www.nand.net/~rjhawkin/ppc850tp/sales-detail.html#TOC003>
> The battery is a 16 cell NiMH battery pack with an embedded
> microprocessor. If you're lucky maybe it can be rebuilt. Here are the
> specs. I don't know what kind of NiMH cells were used in 1998.
> -----------------------------------------------------
> Intelligent Battery Pack:
>
> * 16 NiMH cells, 1700mAH/cell (850)
> * Microprocessor for power management
> * Nominal Voltage - 9.6VDC (850)
> * Nominal Capacity - 3300mAh (850)
>
> Battery Operating Hours and Charging Time Estimates:
>
> * Power off/Suspend charging - 1.5 hours
> * Charge during operation - 2.0 hours
> * Battery Operation (see note) - 2-5 hours
> * Quick Charger (850)
> o Discharging (Discharge and charge cycle) - 7.0 hours;
> Charging - 1.5 hours
>
> NOTE: Operating system, application, and user dependent.
>
> Quick Charger Power Specifications (850)
>
> * Input Voltage - 100-240VAC
> * Input Current - 0.45-0.8A
> * Input Frequency - 50-60Hz
> * Output Characteristics:
> o Rated Voltage - 12VDC
> o Maximum Charge Voltage - 18VDC
> o Quick Charge Current - 2.7A +/-0.1A
> o Trickle Charge Current - 80mA +/-20mA
> ----------------------------------------------------
>
> Chuck Norcutt
>
>
>
> SwissPace wrote:
>> Ian, just the man, I have an old thinkpad 851 (RS/6000) that I was
>> thinking of resurrecting, but the battery is corroded, do you know what
>> can be used to replace it or where the latest info is, it seems a shame
>> to scrap what was such an expensive machine at the time.
>>
>> The other Ian - IanW ;-)
>>> I dont use Mac's but my wife does, and I seem to fix/upgrades everyone
>>> elses Mac's, RS/6000 etc around here :-)
>>>
>>> I have had no problems in using other RAM for Mac upgrades BUT I
>>> always upgrade with matched pairs, that means the timings are the same
>>> etc, as well as make sure some dimwit hasnt managed to use the wrong type
>>> DDR Ram, I've seen it done from so called Mac Shops.
>>>
>>> I've used Kingston, Corsair, and some other brand, totally ignoring where
>>> the chips are made, and by who.
>>>
>>> Cheers
>>> Ian Manners
>>>
>>> A good scare is better than good advice.
>>>
--
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