Power Tools Q&A

coolmm asked:


Power tools require up to 50 amperes of current and operate in an unfriendly environment. The tool must perform at sub zero temperatures and endure in high heat. The batteries must also withstand shock and vibration.

Most power tools are equipped with nickel-cadmium batteries. nickel-metal-hydride has been tried with limited success. Longevity is a problem but new designs have improved. lithium-ion is too delicate and could not provide the high amperage. Lead-acid is too bulky and lacks persistent power delivery. The power tool has simply no suitable alternatives to the rugged and hard-working nickel-cadmium.

In an attempt to pack more energy into power tools, the battery voltage is increased. Because of heavy current and application at low temperatures, cell matching is important. Cell matching becomes more critical as the number of cell connected in series increases. A weak cell holds less capacity and is discharged more quickly than the strong ones. This imbalance causes cell reversal on the weak cell if the battery is discharged at high current below 1V/cell. An electrical short occurs in the weak cell if exposed to reverse current and the pack needs to be replaced. The higher the battery voltage, the more likely will a weak cell get damaged.

Here Is The Brands List For Power Tool

Aeg

Black & Decker

Bosch

Chicago

Pneumatic

Craftsman

Dewalt

 Firestorm

Flex

Hitachi

Makita

Milwaukee

National Panasonic

Paslode

Ryobi Skil

Here Is sample  Battery List For  Power Tool

Brand                    Products ID         Voltage(V) Capacity(mAh)  Weight(g)  Color     Dimension(mm)

BLACK & DECKER   TDW053.1BATUK   14.4       1500             692.4        black     119.12 x 78.72 x 51.57

BLACK & DECKER   TDW054.1BATUK   14.4       1700             779.9        black     119.12 x 78.72 x 51.57





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