Ranked best-of lists for power tools, curated so you can buy in minutes
Ranked best-of lists for power tools, curated so you can buy in minutes
When a cordless saw slows, loses bite, or stops briefly under load, the battery’s voltage may be sagging. Some sag is normal: the motor draws more current as the blade cuts, and the battery voltage dips in response. The important question is whether the dip is modest and temporary or severe enough to trigger the […]
Choosing a 12V battery for a compact drill or driver A 12V cordless drill or impact driver is only as useful as the battery that fits it. For most users, the practical choice is between a compact pack that keeps the tool light and a higher-capacity pack that lasts longer but adds bulk. Start by […]
Yes. Cordless tool batteries can lose charge while sitting on a shelf, even when they are switched off and disconnected from a tool. The amount depends on the battery chemistry, its age and condition, storage temperature, and whether the pack’s electronics draw a small amount of power. For most lithium-ion tool batteries, ordinary self-discharge is […]
Usually, no. A cordless tool battery is designed to charge with a charger made for its battery platform, and a charger from another brand should be treated as incompatible unless the battery and charger makers explicitly say otherwise. Matching voltage or making the contacts fit is not enough: the charger also needs to use the […]
A battery’s cell configuration affects more than runtime. It influences how much current a pack can deliver, how well it handles heat, and how heavy it feels on a tool. Those effects matter most with demanding jobs such as cutting thick lumber or driving large fasteners. For light drilling and occasional home repairs, they may […]
Open two cordless tool batteries with the same voltage rating and you may find very different layouts inside. One has a single layer of cells; another has two rows, or several stacked groups. That layout affects how much energy the pack stores, how much current it can deliver, how well it handles heat, and how […]
Why clean battery and tool contacts Dust and grit can collect around the terminals where a cordless battery meets a charger or tool. A light coating may not cause any trouble. Packed debris, metal filings, or oily residue can interfere with contact, make a battery harder to seat, or contribute to intermittent power. The important […]
What the gauge can—and can’t—tell you A cordless tool battery fuel gauge is a rough planning aid, not a work-hour countdown. Most gauges use a row of LEDs or a small display to indicate charge remaining. Four lights might mean roughly 75–100%, two roughly 25–50%, and one low. The exact ranges vary by brand and […]
A cordless battery left in a freezing van may still work, but it can lose power quickly and may refuse to charge until it warms up. The safest routine is simple: keep batteries dry, bring them indoors when practical, and warm cold packs gradually before charging or use. Insulation slows heat loss; it does not […]
Start with the batteries you own Spare batteries get misplaced when a crew carries several sizes, brands, or generations of packs between a truck, gang box, and work area. Before buying storage, count the batteries and record each pack’s platform and capacity. A simple list might read: four 18-volt packs, two 12-volt packs, and one […]
