[time-nuts] HP 5334A battery

paul swed paulswedb at gmail.com
Thu May 3 20:26:51 UTC 2012


nimh would be the more modern battery that should work in the nicd charge
circuit.
The HP circuits usually were pretty simple actually.
Regards
Paul

On Thu, May 3, 2012 at 2:11 PM, Scott McGrath <scmcgrath at gmail.com> wrote:

> Key here is if battery is ni-cd it implies a charging circuit and using
> alkaline or lithium batteries may explode If charged
>
> On the hp instruments which I have rehabbed from that era most of them
> used nicads with a charger circuit so best advice is replace like with like
>
> Sent from my iPhone
>
> On May 3, 2012, at 12:40 PM, Brooke Clarke <brooke at pacific.net> wrote:
>
> > Hi:
> >
> > Shelf life is the key spec for memory backup batteries.  The worst
> possible type are rechargeable which go dead in a few months.
> > Next best are primary batteries where Alkaline (a few years) is good,
> but newer chemistries like Lithium primary have >> 10 year shelf life.
> > So a computer memory backup battery is the best choice.  The largest one
> that fits the space will have much more capacity than the old battery
> because batteries have improved a lot in the past 10 years.
> > http://www.prc68.com/I/batt.shtml#CC
> >
> > Have Fun,
> >
> > Brooke Clarke
> > http://www.PRC68.com
> > http://www.end2partygovernment.com/Clarke4Congress.html
> >
> >
> > shalimr9 at gmail.com wrote:
> >> The best way is to buy a rechargeable cell pack for cordless phones.
> These are typically made with 3 small NiCad so that they don't mind trickle
> charging and are already safely packaged in shrink tubing with two leads
> and a connector. When the local Lowe's went out of the phone distribution
> market, they sold many of those small battery packs for $1 or $2 and I got
> a few that I have been using for that purpose.
> >>
> >> Didier KO4BB
> >>
> >> ------Original Message------
> >> From: iovane at inwind.it
> >> Sender: time-nuts-bounces at febo.com
> >> To: Time-Nuts
> >> ReplyTo: iovane at inwind.it
> >> ReplyTo: Time-Nuts
> >> Subject: Re: [time-nuts] HP 5334A battery
> >> Sent: May 3, 2012 4:24 AM
> >>
> >>> alanh137 at gmail.com wrote:
> >>>
> >>> My 5334A Service Manual for SERIAL NUMBER PREFIX: 2426A lists the
> following
> >>> battery;
> >>>
> >>> Reference Designation - BT1
> >>> HP Part Number - 1420-0268
> >>> Description - Battery 3.6V .065A-HR NI-CD
> >>> Mfr Code - 28480 (which is Hewlett-Packard)
> >>> Mfr Part Number - 1420-0268
> >>>
> >>> I haven't opened my unit up to make any checks against this data.  Hope
> >>> this helps.
> >> Sure, thank you. I think that the fastest way to replace it would be to
> >> assemble three ordinary 1.2V cells.
> >> Regards,
> >> Antonio I8IOV
> >>
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> >>
> >> Sent from my BlackBerry Wireless thingy while I do other things...
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> >
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