Is it compatible with the 40 volt hartz battery

I'm not sure because I only have a Kobalt battery but this week I will be going to the battery store and see if they have a cheaper battery for this charger then I can let you know if it works with my charge if the battery is not a Kobalt.

Will this charge a Kobalt 40v max 2.5 Ah (this listing has 6.0 Ah) lithoum ion battery?

I have the Kobalt quick charger, 6Ah also. It nicely charges my 4Ah batteries. I think it will charge anything less than its max of 6Ah.

Does anyone know of the off brand jailipok 40v 6mah battery will work with this off brand charger?

Yes, the Jailapok 40v battery will indeed work with this charger. However, this is NOT an off-brand charger; it is a genuine Kobalt charger and it works great.

Does it work for the 4-Amp 40v battery?

Yes; I bought a 2nd charger and battery to add to what was included with the original purchase package of blower, charger, battery. The identifying information is the same on the items. I have been using them successfully for about a year.

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Kobalt 40 Volt Power Equipment Battery, Gen3 Fast Charger

Product ID: 654848149

Details

Brand
cakuuma
Colour
Black
Item weight
921 g
Output voltage
40 Volts
Specification met
UL FCC

⚡80W fast charging power

💡Built-in LED charge indicator

🔋Compatible with all Kobalt 40V max batteries

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฿8282

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power up your productivity—charge smarter, work longer!

RAPID 80 W FAST CHARGING - Get back to work faster with industry-leading recharge speeds.
SMART LED CHARGE INDICATOR - Stay informed at a glance—know exactly when your battery is ready to go.
UNIVERSAL 40 V COMPATIBILITY - Seamlessly powers all Kobalt 40V max lithium-ion batteries for ultimate convenience.
COMPACT LIGHTWEIGHT DESIGN - Portable 920g charger fits perfectly in any workspace without clutter.
FUTURE PROOF SOFTWARE UPDATES - Enjoy ongoing performance improvements with guaranteed software updates.

The Kobalt 40 Volt Power Equipment Battery Gen3 Fast Charger delivers rapid 80-watt charging for all Kobalt 40V max lithium-ion batteries. Featuring a built-in LED indicator for real-time charge status, this compact and lightweight charger minimizes downtime and keeps your outdoor power tools ready to perform. Designed for professionals who demand efficiency and reliability.

Specifications

ASIN	B09ZSDH2LW
Brand	cakuuma
Brand Name	cakuuma
Colour	Black
Global Trade Identification Number	00084182101595
Input Voltage	40 Volts
Input voltage	40 Volts
Item Weight	1.27 kg
Item weight	1.27 kg
Manufacturer	Kobalt Tools
Manufacturer Part Number	3809906
Model Number	KRC 840-03
Number of Ports	1
Output Voltage	40 Volts
Output voltage	40 Volts
Specification Met	UL, FCC
Specification met	UL, FCC
UPC	084182101595

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