Bosch BAT621, 18V Li-Ion 5.0 Ah Battery

CF Product Code: BSABAT621

Manufacturer Part Number: BAT621

UPC: 000346463835

25% more run time (compared to Bosch 4.0 Ah), integrated fuel gauge, works with all Bosch 18V Lithium-Ion tools.

Price: $ 150.00 / EA Legend
BG = Bag
BX = Box
C = Hundred
CS = Case
EA = Each
FT = Feet
KG = Kilogram
M = Thousand
PK = Pack
PR = Pair
RL = Roll
SH = Sheet
ST = Set

Sold By: Each

Special Order. Ships in Approximately 7 Day(s)

Product Details For Bosch BAT621

Product Description

The new 5.0 Ah 18V Bosch FatPack battery offers 25% more runtime (compared to Bosch 4.0 Ah) and more than 65% more runtime (compared to 3.0 Ah). CoolPack Design technology, including advanced heat conductive housing, keeps the battery cooler for 2X longer recharge life. Check the charge status quickly and easily using the integrated fuel gauge. These batteries are designed to work as hard as you, so working in cold weather down to -4°F is no issue. The BAT621 is compatible with all Bosch 18V Lithium-Ion power tools, radios and more.


  • Maximum run time - 25% more run time (compared to Bosch 4.0 Ah)
  • Unique CoolPack Design - advanced heat conductive housing keeps battery cooler, lives up to 2x longer
  • Integrated fuel gauge - for fast and easy charge status
  • Cold weather operation - battery will work down to -4°F
  • Durable housing - survives 3 m drop
  • Flexible Power System™ - works with all Bosch 18 V Lithium-Ion tools


Ah Capacity5
Battery ChemistryLithium Ion
Battery Voltage18


  • BAT621 18V Li-Ion 5.0 Ah Battery

Filters / Attributes

Amp Hours (AH): 5.0
Cell: Lithium-Ion
Size: 18V
Type: Battery

Shipping Info

Weight: 1.4 lbs

Length: 7.5 in.

Width: 4.8 in.

Height: 9.5 in.