X2 18V 4.0Ah Battery Triple Pack-1
X2 18V 4.0Ah Battery Triple Pack-2
X2 18V 4.0Ah Battery Triple Pack-3
X2 18V 4.0Ah Battery Triple Pack-4
X2 18V 4.0Ah Battery Triple Pack-5
X2 18V 4.0Ah Battery Triple Pack-6
X2 18V 4.0Ah Battery Triple Pack-7
X2 18V 4.0Ah Battery Triple Pack-8

X2 18V 4.0Ah Battery Triple Pack

$273.00 $339.00 Save $66

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SKU: S2K0B3-01

<p><div class="metafield-rich_text_field"><p>X2 18V</p></div></p>

X2 18V

<p><div class="metafield-rich_text_field"><p><strong>3 Year</strong> Battery &amp; Charger Warranty</p></div></p>

3 Year Battery & Charger Warranty

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Description Features Specifications In the box

Includes: 3 x X2 18V 4.0Ah Batteries

The SENIX X2 18V 4.0Ah Battery (Model B40X2) is designed for users who need longer runtime without sacrificing portability. At 0.63 kg, it’s slightly heavier than the 2.0Ah and 2.5Ah models, but it doubles capacity for extended work sessions.

Its LED power level display allows instant charge checks, while the advanced Battery Management System (BMS) ensures safety by protecting against overcharging, overheating, and short circuits. With a 5S2P 18650 lithium-ion cell system, the B40X2 provides 72Wh of energy—making it the go-to choice for heavy-duty applications.

 CHARGING TIMES 2Ah 2.5Ah 4Ah 6Ah 8Ah

B20X2 B25X2 B40X2 B60X2 B80X2
CHX2 65min 85min 135min 195min 260min
CHQX2 35min 45min 65min 105min 140min
CHQX2-M-EU 35min 45min 50min 75min 100min
CHDX2-M-EU (Charging one battery) 40min 50min 55min 85min 110min
CHDX2-M-EU (Charging 2 batteries) 80min 95min 100min 155min 195min


Power Level LED Display – Easily check remaining battery life at a glance to plan your work without interruptions.

Compact & Lightweight Design – The battery is easy to handle, store, and swap, reducing fatigue during long tasks.

Advanced Safety BMS – Built-in Battery Management System ensures protection against overcharging, overheating, and short circuits for long-lasting performance.

Voltage: 18V
Battery Type: Lithium-ion
Rated Capacity: 4Ah / 72Wh
Series-parallel system: 5S2P
Cell Type: 18650
Weight: 0.63kg

3 x 4.0Ah 18V Battery (B40X2)

FAQs

What tools are compatible with this 18V battery?

This battery is compatible with all SENIX X2 18V single-battery tools and 2X2 36V dual-battery tools. You can easily swap it between different SENIX cordless products for maximum convenience.

Can I use this battery in cold or hot environments?

Yes, the battery features Temperature Protection, which automatically prevents operation if the temperature is too high or too low to ensure safe performance and prevent damage.

What types of tasks is the PDDX2-M4 suitable for?

The SENIX 18V Compact Drill Driver is ideal for drilling into wood (up to 34mm), steel (up to 13mm), and driving screws. Its compact size makes it perfect for tight spaces and overhead work.

Does the battery protect itself from overheating?

Yes. The built-in heat dissipation system helps prevent overheating to maintain optimal performance and safety.

How do I know when to recharge the battery?

The built-in LED power indicator shows remaining charge, so you’ll know when it’s time to recharge.