February 8, 2023

Charge controllers for NiMH, NiCad 8 cell, 9 cell or 10 cell packs

This is a microprocessor controlled DC/DC converter which can be used as a DC input charger for Nickel-Cadmium, and Nickel metal hydride batteries. It also has serial communications and is programmable with great flexibility.

Can be used as a solar charge controller for a a range of cell counts and battery capacity.
Can use locally to the battery to boost voltage after a long wire run.
Output voltage can be higher or lower than the input voltage.
State-of-the-art charging algorithms for nickel metal hydride and nickel cadmium batteries.
Also useful in other energy harvesting applications since it can be programmed to use whatever power is available, unlike other battery charging circuits.

Quantity	1-49 pieces	50-99	100-199	200+
PST-SEP10-NiMH	$80.00	$75.00	$63.30	$61.00

Input voltage	8-30 volts, 16V nominal
Battery pack size:	8 cells, 9 cells, 10 cells, self adjusting
Output Current	2 amps nominal
Termination method	-deltaV
Dead-pack charging	Trickle charge always available to "jump start" dead packs
Form	Circuit board product, (frame or case developed on request)
Dimensions	4" x 1.8" x 0.5" (10 cm x 4.6 cm x 2 cm)
Mounting Diagram	Dimensioned mounting diagram
Weight	1.2 oz, 34 grams

Connector	Pin out
J1	Input Positive spade terminal	0.25 inch Faston
J2	Input Negative spade terminal	0.25 inch Faston
J3	Pin1 Negative out to battery Pin2 Positive out to battery Pin3 N/C Pin4 negative to green LED (needs a 1K resistor) Pin5 negative to yellow LED (needs a 1K resistor in series) Pin6 negative to red LED(needs a 1K resistor in series) Pin7 +5V for LED return	Mating connector example: 1 piece Molex 22-01-2075 housing 7 Pieces Molex 08-50-0114 crimp terminal
J4	Pin1 RX Pin2 TX	For optional communication
J5	Pin 1 MCLR Pin 2 VDD Pin 3 NEG Pin 4 DAT 5 CLK	For optional programming

Click on the diagram for a readable flow chart

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