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Very early HP25
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07-25-2015, 03:14 PM
Post: #6
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RE: Very early HP25
(07-25-2015 09:51 AM)Harald Wrote: And do yours also have the triangular decimal dots? Yes, my HP-25 s/n: 1508A10390 does. Concerning the battery pack, I decided to have a go and have carefully opened it, clean all the electrolyte mess from the original batteries, and have installed two new unbranded Chinese Ni-Cd AA 900mAh 1.2V elements. So far it holds a full charge for months (literally) when not in use. ![[Image: HP-25_001.jpg]](http://4.bp.blogspot.com/-FQI0df-EwO4/VbOlaeJgAfI/AAAAAAAADdU/Yf_F_aqa-90/s1600/HP-25_001.jpg) ![[Image: HP-25_003.jpg]](http://3.bp.blogspot.com/-_RV2GzUlf3A/VbOlbZv7-zI/AAAAAAAADdg/v9C5vsqdl4s/s1600/HP-25_003.jpg) ![[Image: HP-25_002.jpg]](http://3.bp.blogspot.com/-ZAsZ6e50eS8/VbOlbDQkTGI/AAAAAAAADdY/p3VLe_5fTbE/s1600/HP-25_002.jpg)
Jose Mesquita RadioMuseum.org member |
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| Messages In This Thread |
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Very early HP25 - Harald - 07-24-2015, 10:06 PM
RE: Very early HP25 - Massimo Gnerucci - 07-24-2015, 10:40 PM
RE: Very early HP25 - BobVA - 07-24-2015, 11:04 PM
RE: Very early HP25 - Harald - 07-25-2015, 09:51 AM
RE: Very early HP25 - Massimo Gnerucci - 07-25-2015, 01:35 PM
RE: Very early HP25 - jebem - 07-25-2015 03:14 PM
RE: Very early HP25 - PANAMATIK - 09-09-2015, 10:05 PM
RE: Very early HP25 - BobVA - 07-25-2015, 04:57 PM
RE: Very early HP25 - Etienne Victoria - 09-09-2015, 07:01 PM
RE: Very early HP25 - Harald - 09-09-2015, 07:59 PM
RE: Very early HP25 - PANAMATIK - 09-09-2015, 09:57 PM
RE: Very early HP25 - Brad Barton - 09-30-2015, 05:06 PM
RE: Very early HP25 - Geoff Quickfall - 09-30-2015, 08:06 PM
RE: Very early HP25 - Harald - 09-30-2015, 10:04 PM
RE: Very early HP25 - jebem - 10-02-2015, 07:16 PM
RE: Very early HP25 - brickviking - 10-02-2015, 07:59 PM
RE: Very early HP25 - Geoff Quickfall - 10-03-2015, 12:55 AM
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