Kirkland Signature warranty for car batteries & jump starters
The short version
That full coverage is the same as most of the 12 brands we compared, which typically cover nothing in full. You don't need to register to get this coverage.
From Kirkland Signature's published warranty, checked October 2026.
What's covered
Full coverage: everything, parts and laborPartial coverage: some parts only, you usually pay labor
Purchase5 yrs10 yrs+Full: NoneNo partial coverage
- Full coverageBatteryNone
The fine print, decoded
What it leaves out
- Batteries
Good to know before you buy
- Bring your receipt and the battery to any Costco warehouse.
- The warranty length is printed on the battery label.
- Commercial use cuts free replacement to 6 months.
- Do not remove the date code on the battery, or the warranty is void.
How other brands compare for car batteries & jump starters
- 1. Milwaukee65/100 · Full: 5 years
- 2. Interstate Batteries54/100 · Full: 4 years
- 3. DeWalt43/100 · Full: 3 years
- 4. Optima43/100 · Full: 3 years
- 5. Ryobi43/100 · Full: 3 years
Where you buy it matters
How long stores give you to return it
Longest return window first, for car batteries & jump starters.
- CostcoMost itemsNo fixed deadline
- Sam's ClubMost itemsNo fixed deadline
- BJ's Wholesale ClubMost items365 days
- Harbor FreightMost items90 days
- WalmartMost items90 days
- Blain's Farm & FleetUpper Midwest storesMost items90 days
Show all 18 stores
- Theisen's Home Farm AutoUpper Midwest storesMost items90 days
- Family Farm & HomeGreat Lakes storesMost items60 days
- Les Schwab Tire CentersWest storesMost items60 days
- Advance Auto PartsMost items45 days
- Nordstrom RackCar seats40 days
- Bloomingdale'sBaby gear (strollers, car seats, cribs, high chairs)30 days from delivery
- Mavis Tires & BrakesMost items30 days
- NAPA Auto PartsMost items30 days from delivery
- Tractor SupplyMost items30 days
- Batteries PlusMost items14 days
- O'Reilly Auto PartsCar batteriesNo returns
- Rural KingMidwest storesLivestock, trailers, golf carts, opened chemicals and consumablesNo returns
From each store's published return policy, using its rule for car batteries & jump starters where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
Other things Kirkland Signature makes
- Cookware & Bakeware10/100Full: None. No partial coverage.
- Outdoor Furniture28/100Full: None. Partial to 7 years.
- Tires23/100Full: None. Partial to 5 years.
- Everything else10/100Full: None. No partial coverage.
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