![]() These are the only options that make sense. You can pressure-wash your house and weed. Don't forget these other summer must-haves from Black and Decker. You can rebuild your power tool battery with new cells, or you can buy a new power tool. Black and Decker 20V Max cordless hedge trimmer, 79 (reduced from 129) 79 at Amazon. Your problem is that a power supply which can deliver this kind of current without blowing up costs more than a brand new drill with brand new battery. Resistive losses are proportional to I^2 which means 50 Amps is 100x more trouble than 5 Amps. The converter will cost $6 and it will explode. So, when you say:Ī boost converter cost about 6$ and the power supply 25$ I've talked with a guy who bought some Chinese boost cnverters on ebay, and of course the capacitors on them exploded when he tried to use them at rated power. A 12V to 18V converter for 50A current would be an interesting design. Black+Decker BDCHD18K-B1 18V Li-Ion Cordless Hammer Drill Voltage (V): 18 Battery type: Lithium Battery Capacity (Ah): 1.5 Speed (rpm): 0-360/0-1400 Torque. If the power supply cannot deliver this current, then the drill will not work well, it will stall instead of powering through the job.īesides, boost converters suck at high currents. 18 volt drill is ready for your toughest tasks. It will be alright for a battery, but it will be trouble for a mains-powered power supply. BLACK+DECKER 20V MAX MATRIX Cordless Drill/Driver Kit, White and Orange with Reciprocating Saw Accessory For Cordless Drill (BDCDMT120WC1FF & BDCMTRS) 4.8 out of 5 stars 9 77.78 77. Inlcudes cordless drill/driver with 18 volt battery pack and charger, hammer, quick connect, (12) allen keys, (2) 6-in pliers, screwdriver, utility knife, tape measure, stainless steel ruler, (5) 2-in screwdriving bits and (25) 1-in screwdriving bits. Most likely this stall current will be very high, maybe like 30-50 Amps. Measure the resistance of your motor, and you will know its maximum stall current. Stall current depends only on motor resistance, which you can measure with a multimeter on ohm-meter mode. Maximum current and maximum torque occur at 0 rpm, when the motor is stalled. How many amps does an 18v cordless drill drawĬurrent drawn by a brushed DC motor depends on torque and rpm. ![]()
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