# 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.

**Manufacturer:** Battery Doctor  
**MPN:** `20128`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Battery Doctor |
| Manufacturer name | Battery Doctor |
| Manufacturer | Battery Doctor, BATTERY DOCTOR |
| Part Number | 20128 |
| Product Group | Automotive Parts and Accessories |
| ASIN | B000CQFWLY, B00IQ2SOO8, B07RJTM721 |
| AdultProduct | False |
| Amount | 29.95, 39.99, 41.99, 44.99, 64.58 |
| Asin | B000CQFWLY, B00C70S1M0, B00IQ2SOO8, B07RJTM721 |
| Autographed | False |
| Batteries_included | False |
| Batteries_required | False |
| Binding | Automotive |
| Brand | Battery Doc, Battery Doctor, WirthCo |
| Bullet_point | Auto & Truck Maintenance, Country of manufacture: United States, Made in United States, Manufacturer: BATTERY DOCTOR |
| Case | 1 |
| Cat | Automotive |
| CatId | 15684181 |
| CatTree | 15684181, 15690151, 15719731, 15719911, 15719931 |
| Chemical_names | lead |
| ClassificationId | 15719961 |
| Color | Regular |
| Compliance_type | chemical, on_product_cancer |
| Connectivity_protocol | X-10 |
| Currency | USD |
| CurrencyCode | USD |
| Current_rating | 250.0 |
| DisplayName | Battery Switches |
| Feature | Side Terminal |
| Height | 1.5, 1.50, 1.599999998368000, 18, 21.0, 440, 500, 66, 75, 880 |
| Identifier | 0010054201285, 010054201285, 7434097139009 |
| IdentifierType | EAN, UPC |
| Included_components | Unit^Instruction Guide |
| International_protection_rating | IP54 |
| IsAdultProduct | false |
| IsAutographed | false |
| IsBrandQuery | True |
| IsMemorabilia | false |
| ItemClassification | BASE_PRODUCT |
| ItemName | Battery Disconnect Switch, 3/8-18, 12V, Battery Doctor - 20128, Knife Switch for Side Terminal Batteries - Lot of 12 |
| Item_name | Battery Disconnect Switch, 3/8-18, 12V, Battery Doctor - 20128, Knife Switch for Side Terminal Batteries - Lot of 12 |
| Item_package_quantity | 1, 12 |
| Item_package_weight | 0.55, 6.3 |
| Item_type_keyword | automotive-battery-switches |
| Item_weight | 0.55 |
| Keyword | 20128, 202642728 |
| Label | BATTERY DOCTOR, Battery Doctor |
| Length | 18.0, 21, 5.9, 6.699999993166000, 7.0, 7.00 |
| Link | https://m.media-amazon.com/images/I/31vsnfy8dcL._SL75_.jpg, https://m.media-amazon.com/images/I/31vsnfy8dcL.jpg, https://m.media-amazon.com/images/I/41NsB2kYRcL.jpg, https://m.media-amazon.com/images/ |
| List_price | 41.99 |
| MPN | 20128 |
| Man | Battery Doctor |
| ManufacturerPartsWarrantyDescription | Parts |
| Marking_type | epa_registration_number |
| Material | Brass, Copper |
| MaterialType | Brass, Copper |
| Memorabilia | False |
| Model | 20128 |
| ModelNumber | 20128 |
| Model_name | Battery Disconnect Switch, 3/8-18, 12V |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Home Depot | 202931971 | 21.71 | 1 | None | 1 |
| Zoro | G0464274 | 26.59 | 1 | 102 | 1 |
| Grainger | 4NGT7 | 82.75 | 1 | 31 | 1 |
| Walmart | 39086766 | 25.93 | 1 | None | 1 |
| iboats.com | IB00619881 | 45.99 | 1 | None | 1 |
| sustainablesupply.com | C1260692 | 28.16 | 1 | None | 1 |
| Zoro | G402480414 | 39.96 | 1 | None | 1 |
| National Supply Network | 43279413 | 60.45 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/51000000/51412500/part_--20128---BatteryDoctor--f795682a2c.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp