DC1801 Makita Battery Charger DC1801

Text From Manual (Computer Extracted)

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New Tool TECHNICAL INFORMATION For Models DC1801 Description Battery Charger CONCEPTION AND MAIN APPLICATIONS 1 . This charger can charge MAKITA Ni - MH batteries ( NICKEL METAL HYDRIDE BATTERY ) and MAKITA Ni - Cd batteries . This charger can charge all voltages from 7.2V to 18V . 2 . This charger has a trickle charging function , by which fully - charged ï¿½ batteries will be kept fully charged while left in charger . 78mm 3 . Even a heated battery after use can be left in the charger . ( 3 - 1 / 8 " ) This charger automatically starts charging the battery afer cooled down . 105mm 4 . Charging condition is displayed by green or red light . ( 4 - 1 The light indicates ready to charge , charging , charging complete , / 8 " ) delay charge ( too hot ) and defective battery . 201mm " ) 16 / 15 - 7 ( Specifications Input voltage 120V , 220 - 240V , 230 - 240V Input 60W Output voltage DC7 . 2V , 9.6V , 12V , 14.4V , 18V Output current ( A ) DC 2.1A for 1.3Ah battery ( Battery 7000,9000,9100,9100A , 9120,1200,1200A , 1210,1220 ) 40 min . 50 min . for 1.7Ah battery ( Battery 7001,9001,9101,9101A , 1201,1201A ) Charging time 60 min . for 2.0Ah battery ( Battery 7002,9002,9102,9102A , 9122,1202,1202A , 1222,1422,1822 ) 65 min . for 2.2Ah battery ( Battery 7033,9033,9133,1233,1433,1833 ) Net weight 0.48kg ( 1.06lbs ) Cord length ( m ) 2m ( 6.6ft )
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Features and benefits How to charge 1 . Computer control ï¿½ Computer deducts the completion of charging and controls charging current . 2 . Switching power source method First , input electricity is converted to high - frequency current of approximately one hundred kHz . And the voltage is transformed innto the battery voltages by the high - frequency transformer . The charger can be designed smaller and lighter than using the general transformer with this method . ï¿½ 3 . Constant current charging ï¿½ Charging current will be kept stable , so that the change of the battery ï¿½ can be detected . ï¿½ ( See the " 1 . minus delta V " of Method of stop charging ) ï¿½ 4 . Trickle charging function ï¿½ See " CONCEPT AND MAIN APPLICATIONS " . Method of stop charging ï¿½ DC1801 has four different methods of stop charging . Each of methods will work individually . ( whichever method comes first will stop charging . ï¿½ 1 . minus delta V ï¿½ Charging will be stopped by the detection of the drop of the battery voltage . ï¿½ See ( 1 ) of chart below . ï¿½ 2 . delta T ï¿½ Charging will be stopped by the detection of the rise of the battery temperature . ï¿½ See ( 3 ) of chart below . ( for the batteries with 4 terminals only ) ï¿½ 3 . T ï¿½ Charging will be stopped by the detection of the upper limit of the battery temperature . ï¿½ See ( 2 ) and ( 3 ) of chart below . ï¿½ The upper limits of the battery temperature are 45 degree C . for 1.3Ah batteries ï¿½ and 60 degree C . for 1.7 , 2.0 and 2.2Ah batteries . ï¿½ 4 . Timer ï¿½ Charging will be stopped by the length of charging time as a supplementary method . minus delta V T ( 1 ) Battry Voltage ï¿½ Temperature ( 2 ) delta T ( 3 ) Charging Time Completion of Charging Line ( 1 ) shows Battery Voltage . ï¿½ Line ( 2 ) shows Battery Temperature of Heated Battery . ï¿½ Line ( 3 ) shows Battery Temperature of Nomal Battery . Charging is stopped at delta T . Note : Comparing line ( 2 ) and line ( 3 ) , you can find the point of stop charging before ï¿½ completion of charging on line ( 2 ) .
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Repair circuit board In case of damage of the varistor or fuse , please carry out the repairing as follows , ï¿½ then it is not required to change the circuit board . 1 . How to check the damaged varistor ï¿½ varistor In case of the following condition , the varistor has to be changed . ï¿½ VS2 Use with the circuit board 1 ) The surface of varistor is broken . ï¿½ No . 6312498 and 6312829 2 ) The circuit board near varistor or the inside of charger case is sooty . ï¿½ only 3 ) In case of breakage of fuse , also the varistor can be defective . ï¿½ 4 ) In case of connection of the fast charger with double voltage power ï¿½ source of rated voltage for the fast charger , the varistor can be damaged . ï¿½ Power Supply Cord 5 ) However , the circuit board has to be changed in case that only ï¿½ the fuse is damaged . ( the varistor is in order ) varistor circuit board 1 . How to dismount and mount the varistor ï¿½ 1 ) Take off damaged varistor soldered on the circuit board , with soldering iron . ï¿½ 2 ) Solder the new varistor on the circuit board with soldering iron , ï¿½ and then the extra lead wire from the varistor has to be cut by nipper . Fuse The overhang length must be under 3mm 1 . How to dismount and mount the fuse ï¿½ 1 ) Take off damaged fuse soldered on the circuit board , with soldering iron . ï¿½ 2 ) Solder the new fuse on the circuit board with soldering iron , ï¿½ and then the extra lead wire from the fuse has to be cut by nipper . Fuse The overhang length must be under 3mm by cutting the extra . Interchangeability The following spare parts have an interchangeability with the existing DC1411 . Vinyl Cord Tapping Screw M4 x 25 Varistor Fuse ( only P / N 652727 - 4 ) The spare parts other than the above mentioned have no interchangeability .