-40%

2x NEW 3.6v rechargeable CMOS battery 80mAh (NiMH) vintage motherboards & PLC

$ 4.74

Availability: 73 in stock
  • MPN: Does Not Apply
  • Condition: New
  • Brand: Unbranded/Generic
  • Type: CMOS Battery
  • All returns accepted: ReturnsNotAccepted

    Description

    I'm selling two (you get 2 batteries) brand NEW
    3.6v 80mAh Ni-MH battery. This is mainly used in vintage motherboards. The older batteries used Ni-Cd technology which is dated vs the current Ni-MH which can hold the charge longer. Thus this can be used to replace old obsolete 3.6v 60mAh NiCd which is commonly found on vintage motherboards.
    Dimensions: Sits about 15.5mm high when installed in circuit board and about 15.5mm wide. Distance between pins (and length of battery) is about 19mm. This seems to be the standard size for these batteries.
    Procedure:
    Desolder the old battery, being careful to note the old battery's polarity before removal (one end will probably be marked with a "+" and the motherboard will probably be marked on the "+" side).
    If high melting point lead-free solder was used on your motherboard, you may find it difficult to melt. Trick: melt standard low temp tin/lead solder onto the lead-free solder. This provides better heat conduction between the soldering tip and the existing solder. The solders will mix, lowering the melting point of the existing solder and allowing you to more easily desolder.
    Using solder wick or solder vacuum tool, remove old solder from circuit board contacts. Make sure the solder is removed from the the holes so the pins of the new battery can be inserted.
    If the old battery leaked, use an old toothbrush and isopropyl or denatured alcohol to clean the circuit board. If the battery leakage caused corrosion damage to circuit traces, you may need to repair and replace the damaged traces with a fine wire.
    Insert and solder in the new battery using proper soldering techniques, making sure to observe correct battery polarity.
    Be sure to use non-corrosive flux designed for electronic circuits and a suitable soldering pencil or soldering station. Excessive soldering heat will damage the battery and/or the circuit board traces.
    Note: color and appearance of the battery may vary from the photo, but the dimensions and other specifications will be the same.