Battery HP calculator battery chargers


All LED calculators and the LCD HP-41 series are supplied by rechargeable battery packs. Each calculator series uses its own type of battery pack. To charge this battery pack a dedicated charger must be used. To deal with different main plugs, main voltages and safety rulings, a lot of differet chargers are available.

Choose for the Classic - Woodstock - Topcat - Sting - Spice - Coconut series.

line Classic Series chargers

Model   Outlet
HP 82002A   110 V / 220 V - USA
HP 82002C   110 V / 220 V - USA
HP 82010A   110 V / 220 V - EU
HP 82011A   220 V - UK
HP 82022A   220 V - EU
HP 82022B   220 V - EU
HP 82062A   110 V - USA

Example: HP 82010A

HP82010A Information embossed on this charger:

Primary voltage:
86 - 127V, 172 - 254V ac

Secundary voltage and current:
4.2V 50mA, 4V 150mA
Classic plug
Close-up of the plug

Circuit diagram of charger type HP 82010A:

Schematic charger

This charger contains a 4 Volt voltage regulator (build with R1, D5 and Q1) and a 50mA current source (build with R2, R3, Q2 and Q3). The transformer has two identical primary windings which can be connected in series (for 230V) or in parallel (for 115V) by a slide switch. A detailed description of the internal power supply of the Classic series and its charger can be found on the website of Jacques Laporte.

To charge the Classic battery pack outside the calculator, HP build a Reserve Power Pack, the HP82004A.


line Woodstock Series chargers

The charger for the Woodstock series contains only a single mains transformer, mounted on a printed circuit board.

Model   Outlet
HP 82024A   115 V / 230 V - EU
HP 82025A   220 V - EU
HP 82026A   115 V / 230 V - USA
HP 82041A   220 V - EU
HP 82041C   110 V - USA

Example: HP 82024A

I received an HP 82010A (Classic series) charger with a woodstock plug. The charger contained a transformer mounted on a printed circuit board, labeled 82024-8000A. This confused me. It turned out that this HP 82024A charger uses the case (with the original imprint) of a HP 82010A charger, covered by the label. When I investigated my other HP 82024A chargers the HP 82010A imprint is indeed covered by the label. So this charger turned out to be a HP 82024A charger with a missing the label.

HP82024A Woodstock poer plug
European charger.
Secondary 10 VAC 1.8VA.
Close-up of the plug


line Topcat, Sting and Coconut Series chargers

These chargers are also used for the HP 82143 series printers.
It contains only a transformer. Secondary 8 Volt 3 VA

Model   Outlet
HP 82031A   220 V - Europe
HP 82032A   220 V - UK
HP 82039A   230 V - Australia
HP 82040A   110 V - USA
HP 82043A   115 V - Europe
HP 82059A   110 V - USA
HP 82059B   110 V - USA
HP 82059D   110 V - USA
HP 82066A   220 V - Europe
HP 82066B   220 V - Europe
HP 82067A   220 V - UK
HP 82067B   220 V - UK
HP 82068A   240 V - Australia
HP 82068B   240 V - Australia
HP 82069A   110 V - Europe
HP 82069B   110 V - Middle East

Example: HP 82066B

HP82066B Charger HP82066B_plug


To charge the Topcat battery pack outside the calculator, HP build a Reserve Power Pack, the HP82037A.


line Spice Series chargers

This charger only contains a mains transformer on a printed circuit board.

Model   Outlet
HP 82087D   110 V - USA
HP 82090A   220 V - Europe
HP 82090B   220 V - Europe
HP 82090C   220 V - Europe

Example: HP 82090B.

HP82090B Spice_plug
Main charger. Secondary 9V AC 0.9 VA.
Close-up of the plug

To charge the Spice battery pack outside the calculator, HP build a Reserve Power Pack, the HP82103A.


line HP 82241A / HP 82241AB

Finally the large HP 82241AB adapter. This adapter is too heavy for a wallplug housing. It is used for the HP 82240 series printers. This adapter transforms 220V ac to 9V ac, 13.5 VA. The plug is a standard 3.5mm jack plug.

Model   Outlet
HP 82241A   110 V - USA / Canada
HP 82241AJ   100 V - Japan
HP 82241AB   220 V - Europe
HP 82241AG   240 V - Australia
HP 82241AU   220 V - UK

Example: HP 82241AB.




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