![]() ![]() ![]() Its lightness also helps to reduce fatigue. It offers a runtime of 1.3 Amp-hours (Ah), which is enough to handle day-long jobs with one pause to recharge, and the DCB207 recharges in 30 minutes, which reduces downtime. Its connection to the terminals helps prevent shorts in addition to creating the cell separation required by the FAA.The DeWalt DCB207 provides 20 volts of power for all 20-Volt MAX tools. By locking the DeWalt flight adapter in place on the battery, the 108 watt-hour system is divided into three 36 watt sections and certified safe for air travel. We can carry smaller lithium-ion batteries onboard if they are installed in a device or properly packaged.ĭeWalt developed a simple, but effective workaround. At 100 watts capacity, restrictions kick in based on the inherent risk associated with lithium-ion cells’ thermal runaway should they overheat and catch fire, usually due to a short. A Note About Air Travel Safetyġ08 and 162 nominal watts (and higher) actually create an issue for distribution and travel by air. The idea behind FlexVolt is to create a cordless jobsite where there’s no compromise on power and performance no matter what tool is used without forcing the user to be tied to multiple battery systems. At the same time, there are all the tools they’ve developed that run just fine at 20V Max. DeWalt found in its research that the larger brushless motors run better at 60V Max and 120V Max than they do trying to push a higher amp current through at 20V Max. Multiply the two values together to get power measured in watts. That gas tank is drained by a combination of voltage draw and amp-hour draw (current). The 9.0 amp hour FlexVolt will have 162 watt-hours when it’s released. In the case of DeWalt FlexVolt batteries, that’s 108 nominal watt-hours (nominal voltage times amp hours). It has a set capacity of potential energy available. You can think of a lithium-ion battery like a gas tank. Michael Springer running a 3/4″ board through the new DeWalt Cordless table saw and making use of the 60V FlexVolt 6.0 Ah battery When higher watts are required by larger brushless motors, you can put the battery into FlexVolt (60V Max) tools. With FlexVolt, tools that draw fewer watts for their smaller brushless motors use the 20V Max configuration. Each motor has an amperage rating, but the power consumption is actually measured in watts (your power bill always shows kilowatt-hours used). A drill may get all the torque it needs from a 6 amp motor while a miter saw requires a 15 amp motor to perform well. DeWalt FlexVolt – Why?Ĭorded tools draw different amounts of power. The DeWalt 15Ah FlexVolt battery uses even more cells-but the same principle. Electronic communication between the tool and the battery tells the cells which set of wiring to run on. If you look inside the DeWalt FlexVolt battery pack, you’ll find 15 lithium-ion cells along with wiring configurations for both 20V Max and 60V Max power supply. Another solution was to combine multiple batteries with a series connection between them to double the voltage. If you wanted a higher voltage battery, you had to move to a completely new platform incompatible with the lower voltage system. In series mode, DeWalt FlexVolt batteries connect all 15 cells with series connections.īefore DeWalt FlexVolt, you had to choose a hard configuration for your battery to perform in. Add a third row of cells wired in parallel and you get 6.0 amp hours in your 20V Max battery. This creates a DeWalt 20V Max 4.0 amp hour battery. Now the voltage remains the same, but the amp hours double. You can then wire a second set of five cells to the first using a parallel connection. The ~2.0 amp-hours in each cell don’t combine in any way, so the battery is a 20V Max, 2.0 amp-hour battery-also known as a DeWalt compact battery. Each cell produces 4V Max (3.6 volts nominal) and the series connection multiplies it to make 20 volts. ![]() You get a 20V Max pack (or an 18V nominal pack) by wiring sets of five lithium-ion cells in series. Wiring rows of cells in parallel delivers greater amp hours. You wire lithium-ion battery cells in a series to increase the voltage. The idea of battery pack wiring is fairly straightforward. Electronic controls have given DeWalt the technology to wire the FlexVolt battery both ways to either extend run time in 20V Max tools or deliver more power in 60V Max (and the occasional 120V Max) tools.įlexVolt batteries currently exist in four different sizes:Ģ0V Max and 60V Max from the Same Battery – How? The tool tells the battery which mode to operate in, so it’s completely automatic for the user. Each FlexVolt battery supports outputting either 20V Max or 60V Max. Hybris battery voltage makes DeWalt FlexVolt so revolutionary. ![]()
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