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All tool batteries are powered by LiIon cells that range from an absolute 2.8V minimum to 4.2V maximum. That gives 3.6 volts "average". 5 cells make the most basic battery. 5 x 3.6 = 18V. That's how Ryobi choses to advertise their batteries. The average voltage between fully charged and fully discharged == Honest.
Other companies chose to use the maximum voltage only when almost right off the charger and not used which would be 4.0 to 4.2V. 5x4 = 20.
You get no additional voltage, no additional power (wattage) out of same AmpHour battery between one advertised at 18V vs 20V. 18V 4 AH battery from Ryobi is the exact same amount of power as a 20V 4AH from another company due to the stretching of nominal voltage rating.
A Ryobi battery fresh off the charger is usually at least 20.5V without load. That's going to be the same for any manufacturer.
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"Please make sure promotional items have the same delivery or pickup options and try again"
Disappointed that the hedge trimmer combo is out of stock as I actually would have kept that tool
Disappointed that the hedge trimmer combo is out of stock as I actually would have kept that tool
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I called the store immediately (within minutes of the email) and they refunded it, but I am guessing they would have given me trouble if it were a few days/weeks later.
Works great. I use this to trim my palm tree branches.
I called the store immediately (within minutes of the email) and they refunded it, but I am guessing they would have given me trouble if it were a few days/weeks later.
The cell voltages can range between 3 and 4.2 volts, depending on the state of charge. 3.6 volts is the midpoint of that range and is, more or less, the nominal voltage.
5 times 3.6 = 18 volts (Ryobi)
5 times 4 = 20 volts (Dewalt)
With identical cells, the batteries should perform the same.
The claimed/advertised voltage is just ink on a page. Any performance differences would be due to the quality of the cells.
Ryobi plays the same game with their 40-volt line. They use cells of the same voltage but with 10 in series, etc. Logically, they should be billed as 36-volt batteries because two times 18 equals 36. But, 40 has more ad punch in the same way that 20 does for DeWalt.
I called the store immediately (within minutes of the email) and they refunded it, but I am guessing they would have given me trouble if it were a few days/weeks later.
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