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.

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

	Information embossed on this charger: Primary voltage: 86 - 127V, 172 - 254V ac Secundary voltage and current: 4.2V 50mA, 4V 150mA
	Close-up of the plug

Circuit diagram of charger type HP 82010A:

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.

 

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.

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

 

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

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

 

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.

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.

 

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.

 

Links related to HP calculator chargers

• HPmuseum
• Matthias Wehrli
• HP Batteries and Chargers by David Reaton (Also USB charger for Classic)