Compatible Makita Part Numbers:

1420  1422  1433  1434  1435  1435F  192600-1  193060-0  
193062-6  193101-2  193158-3  193159-1  193711-5  193985-8  638348-6

Compatible Makita Power Tool Models:
1051D  1051DWA  1051DWAE  1051DWD  1051DWDE  1051DZ  4033D  
4033DZ  4332D  4333D  4333DWAE  4333DWD  4333DWDE  4333DZ  
5094DWD  5630DWD  6228D  6228DW  6228DWAE  6228DWBE  6228DWE  
6233D  6233DWAE  6233DWBE  6236DWBE  6236DWDE  6237D  6237DWDE  
6280D  6280DWPE  6281D  6281DWPE  6333D  6333DWBE  6336D  6336DWB  
6336DWBE  6336DWDE  6337D  6337DWBE  6337DWDE  6337DWFE  6339DWDE  
6339DWFE  6381D  6381DWPE  6932D  6932FD  6932FDWDE  6933FD  6934FD  
6935FD  6935FDWDE  6935FDWDEX  8280D  8280DWPE  8281D  8281DWPE  8433D  
8433DWAE  8433DWDE  8433DWFE  8434DWFE  JR140D  JR140DWA  JR140DWAE  
JR140DWB  JR140DWBE  JR140DWD  ML140  ML141  ML142  ML143  UB140D  
UB140DWA  UB140DWB  BMR100

1-Year Warranty

All our Makita 1420 replacement batteries are engineered to meet or exceed original specifications. We provide a 1-year limited warranty covering any manufacturing defects. If the product fails due to inherent quality issues within the first year, we offer a free one-to-one replacement service (subject to proper installation and standard usage).

FAQs

Q: How do I ensure compatibility with my power tools?

A: Please verify that your tool model or the original battery part number is listed in our compatibility table. Additionally, ensure that the voltage, connector interface, and physical dimensions match your original MAK-1420 battery.

Q: Is a 12-hour initial charge necessary for this nickel battery?

A: Yes. To optimize cell chemistry, new nickel-based batteries require a "forming" process. We recommend a continuous 12-hour initial charge, followed by 2-3 complete charge/discharge cycles to achieve maximum runtime and peak performance.

Q: How do I manage the "Memory Effect" of nickel cells?

A: To maintain maximum capacity, utilize the battery until a significant drop in tool performance is observed before recharging. Periodically performing a full discharge-recharge cycle helps calibrate the cells and prevents capacity loss over time.

Q: How to care for my power tool battery and extend its life?

A: 

1. Cool Down: Never charge a battery that is still hot from use. Let it cool for 15-30 minutes before placing it on the charger.

2. Proper Storage: If the battery will not be used for a long time, do not store it empty. Charge it fully and store it in a dry, cool environment.

3. Regular Use: Nickel batteries suffer from high self-discharge; we recommend using and charging the battery at least once every 2-3 weeks to keep the cells active.