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Hi, I have some surplus, prototypes and assorted stuff that might be of interest to some here: High current NiCds. 1995, unused. Some used for cycle testing and some mechanically pull tested: Sanyo KR5000 (5000mah) NiCd D cells - soldertabs. Sanyo KR4000 (4000mAh) NiCd D cells - soldertabs. Gates 2500mAh C cells - soldertabs (rows). High current lead-acids:. Gates 2.5Ah (D) cells, 5Ah X-cells and 8Ah/6V blocks. (20 min charge possible). DoM: Fall 1994, unused. Stored fully charged and cold. Used 12V/6.5Ah Panasonic LCR (3h charge) batteries. Chargers: 12 Volts (automotive) to 13.6 Volts (lead-acid end of charge voltage) DC-DC converter/lead-acid charger. Built around Lambda 12 to 13.6 V DC-DC converters. Maintenance free charging from any 10 to 15 V source. No overcharging possible. With reverse polarity protection on input and output. Various LEDs indicating the status of the charger and an LED showing the status of the source battery. Max. steady state charge current is 1.7 Amp. Transformer-less AC (120VAC nominal) constant current chargers. Current 400 mA or 50 mA. Insensitive to variations/spikes in the AC line voltage but there is little line isolation. A bit bulky for the size of the parts. O2 sensor meter: 4 1/2 digit LCD prototype with readout for the high linearity PDS-1 O2 sensor (1mV offset and 16mV output in air) in % O2. Offset and gain adjust. One 9V battery. Low-battery alarm. About 350 hours per alkaline 9V battery. No drift in offset or gain with dropping battery voltage or temperature. The prototype is in a somewhat larger box than necessary. Handsized and with 1/4" input port. O2: I have a Red Cross kit w/ two cylinders and a constant flow regulator in a carrying case that I no longer need. John
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