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May 4, 2023

External 7 to 10 cell NiMH/NiCad peak charger, 300 mA for 8.4 volt, 9.6V, 10.8V, and 12V battery packs

48 volt sealed lead acid and VRSLA batteries More NiMH and NiCad Chargers Click Here
Small peak charger for 7, 8, 9,  or 10 cell battery packs, NiMH or NiCad

This is a highly regulated, advanced-algorithm battery charger which will work with 7-cell, 8-cell, 9-cell, and 10-cell nickel cadmium and nickel metal hydride battery packs. These wall-mount chargers have a universal AC input and so can be used in any country in the world, though they have the USA two-prong AC input.
Quantity 1-10 11-50 51-100 101-500 501-1000 1001+
PST-3PN0520SA with alligator clip output
Tamiya style receptacle for battery packs and chargers, sometimes used in power supplies
For charging 8.4V, 9.6V, 10.8V or 12V NiCad and NiMH batteries $15.50
$13.25 $11.70 $8.50 $7.20 $6.60
PST-3PN0520SB with barrel plug output
7, 8, 9 or 10 cell battery pack charger for NiMH/NiCd packs 300 mA battery charger with barrel plug output
For charging 8.4V, 9.6V, 10.8V or 12V NiCad and NiMH batteries
$13.25 $11.70 $8.50 $7.20 $6.60
plugset PST-WX12 ---- Output adapter barrel plug kit
12 connector kit (see list below)
Call Call Call    
ZHJX002 adapters with a barrel connector input and screw terminal output For adapting the barrel connector version to screw terminals $2.50 each
General Information
Model PST-3PN0520S Battery Charger
Name Charger for NiMH and NiCad Battery packs with 7, 8, 9 or 10 cells
Type Battery for R/C, Robots, instruments, toys
ROHS ROHS available on special order
Technical Information
Rated input voltage 90-264 VAC, 50/60 Hz, 0.1 Amp input typical
Battery Voltage 8.4VDC to 12VDC packs
Input Frequency 50-60 Hz
Cell count (series) 7 cells for 8.4V
8 cells for 9.6V
9 cells for 10.8V
10 cells for 12V
Automatically detects and charges packs of different cell count
Battery size 300 mAH to 2400 mAH
Charging current 300 mA ±30 mA typical
Charger type Nickel Metal Hydride or Nickel Cadmium chemistry
Charging algorithm Constant current -Delta V
Termination -5mV per cell, or 1.6 V per cell or 8 hour time out
Red LED indicates bulk charging
Green "Charged" light turns on and trickle charge turned on at Termination
Important note: Due to the erratic charge behavior of NiMH and NiCad batteries when first placed on charge there is a delay of up to 15 minutes before an accurate charge termination can be read. In worst case a battery can be taken off the charger and reattached, and charged for 15 minutes before the "charged" light comes on again.

In addition, new packs should be charged and discharged several times before they "settle in" to a predictable charging condition.
Trickle Current <50 mA
Style Wall mount
Output power 6W maximum
Output voltage 16.4 V typical maximum
Output options included Alligator clips or 5.5 mm OD x 2.1 mm ID barrel More barrel connectors available separately, see below
Weight 100 grams, 0.1 kg, 0.2 pounds, 3.5 oz
Cooling Natural convection, no fan
Efficiency >75%
Size 66 x 61 x 25 mm, 2.6 x 2.4 x 1 inches
Environment -10°C to +40°C operating, -40°C to +70°C storage
Temperature rise <40°C rise on case under any line voltage and maximum rated load
Vibration, Impact 5mm, 50Hz, 600 Seconds, 1 meter drop 3 times
Protections Short circuit protection. Output voltage protection keeps the output voltage from going too high to damage the battery, even in a fault condition.
Reverse polarity protection NO reverse polarity protection
Safety CE marked, UL, cUL designed to ED60950, UL 1950
EMC EN55022B
MTBF 30,000 hours by MIL-STD calculation
HiPot, ESD Hi-Pot 3000 V, 1 minute, ESD 8000V
LED Indications Power on, but no battery connected Black or Green
Charging Red
Charged/Trickle Charging Green


Twelve optional DC Plugs slip over the 5.5 x 2.1 mm connector if desired.
  • 2.35 OD x 0.7 ID Barrel
  • 3.0 OD x 1.1 ID Barrel
  • 3.5 OD x 1.35 ID Barrel
  • 4.0 OD x 1.7 ID Barrel
  • 4.75 mm OD x 1.75 mm ID Barrel EIAJ-03
  • 5.0 mm OD x 3.5 mm ID with center pin
  • 5.5 mm OD x 1.5 mm ID type 2 Barrel
  • 5.5 mm OD x 2.5 mm ID Barrel
  • 6.3 OD x 3.0 ID center pin Barrel
  • 6.0 OD x 4.4 ID center pin Barrel
  • 7.4 mm OD x 5.0 center pin ID Barrel
  • 7.9 OD x 5.6 ID center pin Barrel


OEM Battery Chargers Much lighter and smaller and more efficient than transformer based NiCad chargers

OEM Battery Chargers Very low cost intelligent multistage charger for 4.8 or 3.6 volt batteries

OEM Power Supplies Universal Power Input 90-264VAC 50/60 Hz.

Safety Agency Compliance Tamiya or barrel plug options

Universal Power Input OEM Power Supplies and OEM Battery Chargers Available immediately off-the-shelf

External NiMH or NiCad charger useful for 7 cell, 8.4Volt, 8 cell 8.6 and 4.8V packs, 3.6 volt pack charger, 4.8 volt pack charger, 4.8v nimh charger, 4.8 volt charger

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