Does a higher Ah pack make the tool stronger?

No. Power comes from voltage and the motor; Ah is runtime. A larger pack does run cooler, because the load per cell is lower.

Are 18 V and 20 V max packs different?

No — the same five lithium-ion cells in series. 18 V is the nominal voltage, 20 V max the peak off-load.

Do I need to fully discharge the pack?

No. Lithium-ion has no memory effect, so charge from any state. Running a pack flat actually stresses the cells.

How should I store packs I will not use for a while?

At roughly 40-60% charge, somewhere cool and dry. Storing full or empty accelerates capacity loss.

Can I use another brand's charger?

You should not. The charger communicates with the pack to monitor cell voltage and temperature; an incompatible unit bypasses that protection.

How long does a battery last?

It depends on use — capacity usually drops noticeably after a few hundred full cycles. Working in extreme heat or cold is the biggest factor shortening life.

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Batteries & Chargers

The battery is the most expensive and shortest-lived part of a cordless tool, and the right capacity plus sensible charging habits will double its life. This page explains what voltage and amp-hours each tell you, what fast charging really does, and how platform compatibility works. The catalogue holds over 110 packs, chargers and adapters.

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Volts, amp-hours and watt-hours

Volts (V) indicate the tool's power, amp-hours (Ah) its runtime. Their product, watt-hours (Wh), is the total energy in the pack and the only honest way to compare two platforms: an 18 V 5.0 Ah pack holds 90 Wh, a 12 V 6.0 Ah pack 72 Wh.

More Ah does not make a tool stronger; it runs longer and weighs more. On high-current tools — breakers, grinders — a larger pack also runs cooler, because the load per cell is lower.

Pack	Energy	Suited to
12 V 2.0 Ah	24 Wh	Driving, assembly, light in the hand
18 V 2.0 Ah	36 Wh	Short tasks, spare pack
18 V 5.0 Ah	90 Wh	General jobsite use
18 V 8.0-12.0 Ah	144-216 Wh	Breakers, grinders, sustained load

Chargers and charging time

Charging time follows pack capacity and charger current. Fast chargers monitor pack temperature and drop the current when needed; letting a hot pack cool for a few minutes before charging extends cell life.

Multi-bay and sequential chargers suit crews running several cordless tools: one pack works while the next fills, and the machine never waits.

Lithium-ion packs have no memory effect — full discharge is unnecessary.
For long storage, keep packs at 40-60% charge somewhere cool.
Let a hot pack cool before charging it.
The charger must belong to the same brand and platform as the pack.

Platform compatibility

Packs work only on their own platform: the rail geometry and the electronics that talk between pack and tool are specific to each maker. Adapters may bridge the mechanics but can bypass the protection electronics.

For crew purchases, staying on one platform makes the battery pool shared and reduces the number of spares needed.

Frequently Asked Questions

Does a higher Ah pack make the tool stronger?
No. Power comes from voltage and the motor; Ah is runtime. A larger pack does run cooler, because the load per cell is lower.
Are 18 V and 20 V max packs different?
No — the same five lithium-ion cells in series. 18 V is the nominal voltage, 20 V max the peak off-load.
Do I need to fully discharge the pack?
No. Lithium-ion has no memory effect, so charge from any state. Running a pack flat actually stresses the cells.
How should I store packs I will not use for a while?
At roughly 40-60% charge, somewhere cool and dry. Storing full or empty accelerates capacity loss.
Can I use another brand's charger?
You should not. The charger communicates with the pack to monitor cell voltage and temperature; an incompatible unit bypasses that protection.
How long does a battery last?
It depends on use — capacity usually drops noticeably after a few hundred full cycles. Working in extreme heat or cold is the biggest factor shortening life.