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The TeenPower 12/20V Max Battery Charger Replacement is a high-efficiency dual-port charger compatible with a wide range of Dewalt 12V and 20V Max lithium batteries. It delivers rapid 90-minute charging for 6.0Ah batteries, features smart LED indicators for real-time status, and supports convenient wall mounting to keep your workspace tidy. Backed by a 1-year warranty, it offers reliable performance matching original Dewalt chargers at a great value.
| ASIN | B0CW9R6ZT5 |
| Battery Charge Time | 90 minutes |
| Best Sellers Rank | #34,655 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #399 in Cordless Tool Battery Packs |
| Brand | TeenPower |
| Charging Time | 90 minutes |
| Color | Yellow |
| Connector Type Used on Cable | Dewalt 20V Max |
| Current Rating | 4 Amps |
| Customer Reviews | 4.4 out of 5 stars 373 Reviews |
| Input Voltage | 240 Volts |
| Item Dimensions D x W x H | 6"D x 3"W x 2"H |
| Manufacturer | TeenPower |
| Mfr Part Number | ea9dc1cc-bb00-4487-838e-18791e904ac6 |
| Number of Ports | 2 |
| Output Voltage | 20 Volts (DC) |
| Product Dimensions | 6"D x 3"W x 2"H |
| Warranty Description | 1 Year Manufacturer |
J**I
Works and sufficiently well-designed
I know this is a knockoff, but so long as it is electrically designed reasonably, I don't care. The internal design literally duplicates the charging circuitry for the two batteries, so charging with one battery cannot affect the charging of another battery. The charging circuitry is essentially an isolated DC-to-DC converter, stepping down high-voltage to low-voltage. The high-voltage input comes from a full-bridge rectifier. Feedback to the high high-voltage side is through some opto-couplers. The circuit is reasonably efficient, but the greatest amount of heat loss is through the diode, which has a 0.3V forward drop. It would have been nice if it they had use a synchronous designed. 20V DeWalt batteries are essentially a dumb 5S lithium battery pack. Each of the individual cell lines is connected to a controller chip, which implies that it has the ability to monitor each cell to prevent overcharging. This is important as many other cheap chargers do not monitor each cell, which is extremely dangerous. There also appears to be some passive cell-balancing circuitry, but it's extremely low wattage. The charger controller IC is unfortunately deliberately unmarked, so I can't look up the specs. It draws 0.3W idle. It draws about 20W charging a single 12V battery (3S). It draws about 33W charging a single 20V battery (5S). When fully charged, it charges 20V batteries to 20.75V, which within the max voltage of a 5S Li-ion pack, but pushing it very close.
E**O
Teen Power
It has served me incredibly well; it charges my batteries in no time. Excellent product!
M**3
Works great
Works great.
L**L
Great charger for the money
Having several batteries to charge this made charging easy a nice value for the money and easy to use
M**5
Doesn't work
Thos product does not charge dewalt or off brand batteries. It shows charging has been completed, with no charge.
J**N
Great little side-by-side
It looks great the price they need to work on selling the batteries along with the products
G**D
As described
Good product
J**I
Works great
Doesn't come with batteries but can be used for recommend batteries.
L**N
Plastique cheap
Fait un peu plastique cheap Mais fait la job
L**O
Poor quality
I bought it at the end of August and took five weeks off work at the end of the year. That means that in just four months of use, this is already the condition of the product. Additionally, the battery now takes much longer to charge.
Y**%
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C**.
Not fast charge at all
Not a fast charge
S**F
Parfait
Je recharge mes autre batterie avec et aucun problรจme
Trustpilot
1 month ago
3 weeks ago