Battery Doctor Knife Switch for Side Terminal Batteries-20128 at The Home Depot
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Battery Doctor

Model # 20128

Knife Switch for Side Terminal Batteries

Battery Doctor Knife Switch for Side Terminal Batteries

This item has been discontinued.
The Home Depot no longer carries this specific product.

$22.97 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


In Stock



Model # 20128

Internet # 202931971

Stop unwanted battery drain with Battery Doctor's patented Knife Switch for Side Terminal Batteries. It's easy to install and simple to use. Simply mounts on negative side battery terminal and flip the switch to quickly disconnect battery. Provides 3/8-18 bolt for receiving standard eyelet cable connector. Rated 250 amps continuous and 750 amps surge at 12 volts.

  • Mount on negative battery post
  • Stop unwanted battery drain
  • Help prevent theft, tampering and unauthorized use, improve safety and security of stored vehicles, RVs and seasonal equipment
  • Rated 250 amps continuous and 750 amps surge at 12 volts
  • For side terminal batteries
  • 3-1/4 in. W x 3-3/4 in. L x 1-1/2 in. H


Assembled Depth (in.)  7.0 in  Assembled Height (in.)  1.5 in 
Assembled Width (in.)  4.5 in  Certifications and Listings  No Certifications or Listings 
Color  Black  Color Family  Blacks 
Cord Length (ft.)  0.0  ENERGY STAR Certified  No 
Manufacturer Warranty  Manufacturer Warranty  Number of batteries charged at once 
Product Depth (in.)  0.55  Product Height (in.)  1.5 
Product Weight (lb.)  0.55 lb  Product Width (in.)  4.5 
Returnable  30-Day  Safety & Security Product Type  Battery Charger 
Voltage (volts)  12 



Most orders process within 3 business days.

Please allow 3 to 5 business days for Standard Shipping in addition to order processing time, which varies by product.  Items deliver by small parcel service.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.