NOTE - I'll be gone from May 6-29. If you order during that time, I'll ship immediately upon my return. If you order before May 5, you'll get the cable within 3 days (USPS shipping).

Fully regulated USB charger for all HP Woodstock series calculators. Safely charge both NiCd and NiMH batteries. Remember when you charged your Woodstock calculator and it got hot due to the high charging current? The plastic on my HP-21 actually discolored and turned light brown! This charger cable regulates to a lower current to safely charge your battery pack. Charging will take longer, but will be safer. I use only gold plated connectors in the plug, just like HP did in their original chargers.