12V 4.5Ah Lithium-Ion Rechargeable Battery Set

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$49.95 ea

1 ship on Nov. 20
50 ship on Dec. 2


  • Jameco Part no.: 2129351
  • Manufacturer: MG Electronics
  • Manufacturer no.: LBP-124500
  • Hazard *This product must ship ground
  • Jameco Catalog
# of units Price
1+ $49.95
10+ $44.95
25+ $39.95

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12V Lithium-Ion Rechargeable Battery Set

This covert battery pack is high-powered, ultra-compact, and comes complete with a charger. It provides the same power as larger batteries at a fraction of the size and weight.

Battery Pack Features:

  • 12VDC 4.5 Amp hour
  • On/Off switch in battery pack
  • Size: 2" x 3" x 3/4"
  • Weight: 0.58 lbs.
  • Easily concealed for covert applications
  • 2.1mm male input for charging and 2.1mm female output plug to power your device
  • Life: About 500 times at 0.2C (0.2C discharge of about 500 times)

Charger Features:

  • Switching Power Supply/Automatic Charger
  • Input: 110VAC ~ 230VAC 50/60Hz
  • Output: 12.6VDC, 350mA
  • LED indicators
  • 18" power cord with 2.1mm female barrel plug
Note: Requires initial charging for 24 hours before use!

Product Note

This 4500mAh battery connected to a 100mAh load should in theory last 45 hours. In reality, depending how the load changes as the battery voltage discharges, the operating temperature, the battery manufacturing tolerances etc., the actual life of the battery will surely be less.

The spec sheet states the nominal output current to be used is 350mA. We used a DC load set at 1 amp and this battery pack lasted 3 hours before reaching the low volts cutoff set at 8 volts.

If you are needing higher discharge rates, consider using lead acid gel cells, NiMH batteries or the more exotic Lithium-Titanate types which outperform the more common Li-Ion batteries.

We have also found that despite what is stated in the datasheet, the charging finished green LED indicator light on the power supply does not always light, does not always indicate a full charge and may light even when not charged fully. Therefore, using a voltmeter to measure the output voltage can ensure full and proper charging.

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Specification Value
Cell SizePack
Volts (VDC)12
Nominal Capacity (mAh)4500
ChemistryLithium-Ion
Size2.00"L x 0.75"W x 3.00"H
Termination2.1mm x 5.5mm female barel plug
FeaturesRechargeable
Battery TypePrimary


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