EFEST IMR 21700 BATTERY 3700mAh
Store pickup availability
DUNMORE ROAD SHOP
MAPLE AVE SHOP
PRODUCT DESCRIPTION
EFEST's premium 21700 batteries are optimally designed for performance and reliability. These flat top batteries are the perfect match for vaporizers and e-cigarettes.
Battery Specifications:
- Size: 21.5mm diameter x 70.4mm length (21700)
- Type: IMR/Li-Mn (Lithium Manganese) - Rechargeable
- Capacity / Discharge: 3700mAh / 35A Max Discharge
- Voltage: 3.7V
- Style: Flat Top Battery
- Protected: No (Use with caution and proper charging practices)
- Weight: Approx. 73.12g
- Color: Dark Purple
Safety Notice
- Always use proper charging equipment designed for IMR/Li-Mn batteries.
- Never overcharge or discharge batteries.
- Store batteries in a safe and cool environment.
- Inspect batteries regularly for damage.
- Dispose of batteries responsibly according to local regulations.
SHIPPING INFO
SHIPPING POLICY
Gas City Vapes offers same day shipping on all Domestic orders placed before 1pm MST with the exception of Holidays and weekends.
Last updated: February 3, 2026
If you do not see any available shipping options during checkout, please contact us directly so we can make alternative shipping arrangements for your order.
Proof of Age Required
Shipping in Canada
- British Columbia - Appx 3 Business Days
- Alberta - Appx 3 Business Days (Calgary = 1 Day, Edmonton = 2 Days)
- Saskatchewan - Appx 4 Business Days (Saskatoon & Regina = 3 Days)
- Manitoba - Appx 4 Business Days
- Ontario - Appx 4 Business Days
- Quebec - NO SHIPPING
- New Brunswick - Appx 8 Business Days
- Nova Scotia - Appx 8 Business Days
- PEI - Appx 8 Business Days
- Newfoundland - Appx 8 Business Days
- Nunavut - NO SHIPPING
- Northwest Territories - NO SHIPPING
- Yukon - Appx 13 Business Days
Please note all shipping times are appx and may be delayed if you live in a remote area of your province or if the shipping carrier has weather delays. If you require your package sooner than we offer with the free shipping option you can upgrade to Xpresspost for a fee and usually gets to you in half the amount of time.
United States Shipping
IMPORTANT UPDATES FOR U.S. CUSTOMERS
Due to the new U.S. Customs and Border Protection regulations, the way we ship orders to the United States is temporarily changing. Effective August 29, 2025, the U.S. has eliminated the duty-free exemption for all packages from Canada.
What This Means for Your Order:
New Orders (placed after August 28, 2025): We have temporarily suspended the ability to place U.S. orders directly through our website. We are actively working to implement a new system that will allow us to properly collect and prepay all required duties and taxes at the time of your purchase.
Orders Already Shipped (placed before August 29, 2025): IF your order was shipped before this change took effect, but has not arrived in the U.S., there's a significant risk of delay or refusal by U.S. Customs. Packages shipped under the old rules may be returned to us as non-compliant. Unfortunately, once a package is in transit, we have no control over its clearance process. We will monitor your tracking information and contact you immediately if we see any issues.
Need to Order Now? We're committed to serving our loyal U.S. customers. If you need to place an order and are having troubles or not seeing any shipping options at checkout, please contact us directly via phone or email. We will process your request manually and discuss any potential implications.
We sincerely apologize for any inconvenience this may cause and thank you for your patience as we navigate these complex changes. We appreciate your business and are working hard to make our U.S. shipping process as seamless as possible in compliance with all new regulations.
International Shipping Disclaimer
- You, the buyer, are responsible for any VAT, tariff, duty, taxes, handling fees, customs clearance charges, etc. required by your country for importing consumer goods. We do not collect this beforehand, and cannot give you an estimate of the cost - charges vary around the world.
- As an international consumer, please do your research to ensure there are no surprise charges when clearing your package through customs, and to have an idea of what the additional cost may be. If you are unfamiliar with customs fees and charges, please speak to your local postal or customs office for more information. It is your full responsibility to verify the customs, duties charges, and procedures in your country prior to placing your order.
- If customs fees and charges are refused at the time of delivery, your order will be returned and you will not receive a refund for shipment costs.
Delivery Timing
Gas City Vapes Inc. does not guarantee at any time a certain delivery date or time frame for delivery for any product or order. Any listed time for a shipping method is an estimate only. For orders with deadlines please order well in advance.
Shipping Terms
Gas City Vapes Inc. is not responsible for lost, misplaced, or delayed shipments or damaged freight by the freight carriers after they have been dispatched.
Gas City Vapes Inc. cannot be held responsible / liable for lost or stolen packages that have delivery confirmation to the address that was provided. The customer accepts full responsibility to file any claim(s) with carrier for damaged and/or lost shipments.
We are not responsible for mis-delivery errors via carrier, or incorrect shipping info.
If you have any further questions please feel free to contact us at
sales@gascityvapes.com
RETURNS & WARRANTY
Returns, Refunds & Warranty
At Gas City Vapes, we want to ensure you are satisfied with your purchase. Please read our policy below regarding returns, warranties, and exchanges.
1. Final Sale & Non-Returnable Items
For sanitary and safety purposes, the following items are Final Sale and cannot be returned or exchanged once purchased or shipped, unless dead-on-arrival (DOA):
- E-Liquid and liquid products
- Disposable Vapes
- Pre-filled pods (including STLTH pods)
- Replacement Coils and Pods
- Rechargeable Batteries
- Atomizers / Tanks
- Opened or used non-defective items
2. Change of Mind (Unopened Items)
If you change your mind about a purchase, you may return unopened and unused items within 30 days of purchase for a full refund.
Gas City Vapes VIP Loyalty & Rewards Members enjoy an extended 60 day return window.
- Condition: Items must be in their original, sealed packaging.
- Shipping: The customer is responsible for return shipping costs. Shipping charges are non-refundable.
3. Hardware Warranty (Defects)
Hardware purchased directly from our website is covered by a 30-Day Limited Warranty from the date of delivery.
Gas City Vapes VIP Loyalty & Rewards Members enjoy an extended 60 day warranty.
- Coverage: This warranty covers manufacturing defects. It does not cover normal wear and tear, cosmetic issues (scratches/discoloration), accidents, abuse, disassembly, or user error.
- Packaging Requirement: Manufacturers require the original packaging (including outer sleeves and warranty cards) to process claims. Do not discard your packaging, or we may be unable to process your warranty.
- Compatibility: We do not guarantee compatibility between different items unless otherwise states. Incompatibility is not a valid reason for return.
- Cannabis/CBD Warning: Atomizers and devices sold here are for use with e-liquids only unless otherwise states. Use of cannabis/CBD oils or similar substances voids the warranty immediately.
4. Dead on Arrival (DOA) & Missing Items
Please inspect your package immediately upon delivery. Claims for "Dead on Arrival", missing items, or physical damage must be reported within 48 hours of delivery.
5. Incorrect Shipments
If we made a mistake and sent the wrong item, we will fix it at no cost to you.
- We will provide a pre-paid shipping label for you to return the incorrect item.
- Once the incorrect item is received back at our facility, we will immediately ship the correct product to you.
- Note: We cannot ship the replacement until the incorrect item is received or confirmed in transit.
6. Fees & Shipping Costs
- Return Shipping: Customers are responsible for return shipping costs for non-defective returns. We cover shipping costs for approved warranty replacements on our own shipping errors.
-
Restocking Fee (15%): A 15% fee may be deducted from your refund if:
- Returns are opened and found to be non-defective.
- Items are not cleaned/emptied prior to return
- The package was refused by the customer or carrier (shipping costs are also deducted in this case).
- Refund Methods: Refunds are issued to the original payment method or as store credit. We are not responsible for refunds to prepaid cards that are no longer in the customer's possession. We may require a copy of Photo ID to process certain refunds.
How to Initiate a Return
To start a return or warranty claim, please email us within the 30-day window.
Email: sales@gascityvapes.com
Please include the following in your email:
- Full Name
- Order Number
- Detailed explanation of the issue
- Photo or video proof of the defect (if applicable)
Once approved, you will receive further instructions. Replacements are shipping after the defective item is approved for warranty.
EFEST's premium 21700 batteries are optimally designed for performance and reliability. These flat top batteries are the perfect match for vaporizers and e-cigarettes.
Battery Specifications:
- Size: 21.5mm diameter x 70.4mm length (21700)
- Type: IMR/Li-Mn (Lithium Manganese) - Rechargeable
- Capacity / Discharge: 3700mAh / 35A Max Discharge
- Voltage: 3.7V
- Style: Flat Top Battery
- Protected: No (Use with caution and proper charging practices)
- Weight: Approx. 73.12g
- Color: Dark Purple
Safety Notice
- Always use proper charging equipment designed for IMR/Li-Mn batteries.
- Never overcharge or discharge batteries.
- Store batteries in a safe and cool environment.
- Inspect batteries regularly for damage.
- Dispose of batteries responsibly according to local regulations.
SHIPPING POLICY
Gas City Vapes offers same day shipping on all Domestic orders placed before 1pm MST with the exception of Holidays and weekends.
Last updated: February 3, 2026
If you do not see any available shipping options during checkout, please contact us directly so we can make alternative shipping arrangements for your order.
Proof of Age Required
Shipping in Canada
- British Columbia - Appx 3 Business Days
- Alberta - Appx 3 Business Days (Calgary = 1 Day, Edmonton = 2 Days)
- Saskatchewan - Appx 4 Business Days (Saskatoon & Regina = 3 Days)
- Manitoba - Appx 4 Business Days
- Ontario - Appx 4 Business Days
- Quebec - NO SHIPPING
- New Brunswick - Appx 8 Business Days
- Nova Scotia - Appx 8 Business Days
- PEI - Appx 8 Business Days
- Newfoundland - Appx 8 Business Days
- Nunavut - NO SHIPPING
- Northwest Territories - NO SHIPPING
- Yukon - Appx 13 Business Days
Please note all shipping times are appx and may be delayed if you live in a remote area of your province or if the shipping carrier has weather delays. If you require your package sooner than we offer with the free shipping option you can upgrade to Xpresspost for a fee and usually gets to you in half the amount of time.
United States Shipping
IMPORTANT UPDATES FOR U.S. CUSTOMERS
Due to the new U.S. Customs and Border Protection regulations, the way we ship orders to the United States is temporarily changing. Effective August 29, 2025, the U.S. has eliminated the duty-free exemption for all packages from Canada.
What This Means for Your Order:
New Orders (placed after August 28, 2025): We have temporarily suspended the ability to place U.S. orders directly through our website. We are actively working to implement a new system that will allow us to properly collect and prepay all required duties and taxes at the time of your purchase.
Orders Already Shipped (placed before August 29, 2025): IF your order was shipped before this change took effect, but has not arrived in the U.S., there's a significant risk of delay or refusal by U.S. Customs. Packages shipped under the old rules may be returned to us as non-compliant. Unfortunately, once a package is in transit, we have no control over its clearance process. We will monitor your tracking information and contact you immediately if we see any issues.
Need to Order Now? We're committed to serving our loyal U.S. customers. If you need to place an order and are having troubles or not seeing any shipping options at checkout, please contact us directly via phone or email. We will process your request manually and discuss any potential implications.
We sincerely apologize for any inconvenience this may cause and thank you for your patience as we navigate these complex changes. We appreciate your business and are working hard to make our U.S. shipping process as seamless as possible in compliance with all new regulations.
International Shipping Disclaimer
- You, the buyer, are responsible for any VAT, tariff, duty, taxes, handling fees, customs clearance charges, etc. required by your country for importing consumer goods. We do not collect this beforehand, and cannot give you an estimate of the cost - charges vary around the world.
- As an international consumer, please do your research to ensure there are no surprise charges when clearing your package through customs, and to have an idea of what the additional cost may be. If you are unfamiliar with customs fees and charges, please speak to your local postal or customs office for more information. It is your full responsibility to verify the customs, duties charges, and procedures in your country prior to placing your order.
- If customs fees and charges are refused at the time of delivery, your order will be returned and you will not receive a refund for shipment costs.
Delivery Timing
Gas City Vapes Inc. does not guarantee at any time a certain delivery date or time frame for delivery for any product or order. Any listed time for a shipping method is an estimate only. For orders with deadlines please order well in advance.
Shipping Terms
Gas City Vapes Inc. is not responsible for lost, misplaced, or delayed shipments or damaged freight by the freight carriers after they have been dispatched.
Gas City Vapes Inc. cannot be held responsible / liable for lost or stolen packages that have delivery confirmation to the address that was provided. The customer accepts full responsibility to file any claim(s) with carrier for damaged and/or lost shipments.
We are not responsible for mis-delivery errors via carrier, or incorrect shipping info.
If you have any further questions please feel free to contact us at
sales@gascityvapes.com
Returns, Refunds & Warranty
At Gas City Vapes, we want to ensure you are satisfied with your purchase. Please read our policy below regarding returns, warranties, and exchanges.
1. Final Sale & Non-Returnable Items
For sanitary and safety purposes, the following items are Final Sale and cannot be returned or exchanged once purchased or shipped, unless dead-on-arrival (DOA):
- E-Liquid and liquid products
- Disposable Vapes
- Pre-filled pods (including STLTH pods)
- Replacement Coils and Pods
- Rechargeable Batteries
- Atomizers / Tanks
- Opened or used non-defective items
2. Change of Mind (Unopened Items)
If you change your mind about a purchase, you may return unopened and unused items within 30 days of purchase for a full refund.
Gas City Vapes VIP Loyalty & Rewards Members enjoy an extended 60 day return window.
- Condition: Items must be in their original, sealed packaging.
- Shipping: The customer is responsible for return shipping costs. Shipping charges are non-refundable.
3. Hardware Warranty (Defects)
Hardware purchased directly from our website is covered by a 30-Day Limited Warranty from the date of delivery.
Gas City Vapes VIP Loyalty & Rewards Members enjoy an extended 60 day warranty.
- Coverage: This warranty covers manufacturing defects. It does not cover normal wear and tear, cosmetic issues (scratches/discoloration), accidents, abuse, disassembly, or user error.
- Packaging Requirement: Manufacturers require the original packaging (including outer sleeves and warranty cards) to process claims. Do not discard your packaging, or we may be unable to process your warranty.
- Compatibility: We do not guarantee compatibility between different items unless otherwise states. Incompatibility is not a valid reason for return.
- Cannabis/CBD Warning: Atomizers and devices sold here are for use with e-liquids only unless otherwise states. Use of cannabis/CBD oils or similar substances voids the warranty immediately.
4. Dead on Arrival (DOA) & Missing Items
Please inspect your package immediately upon delivery. Claims for "Dead on Arrival", missing items, or physical damage must be reported within 48 hours of delivery.
5. Incorrect Shipments
If we made a mistake and sent the wrong item, we will fix it at no cost to you.
- We will provide a pre-paid shipping label for you to return the incorrect item.
- Once the incorrect item is received back at our facility, we will immediately ship the correct product to you.
- Note: We cannot ship the replacement until the incorrect item is received or confirmed in transit.
6. Fees & Shipping Costs
- Return Shipping: Customers are responsible for return shipping costs for non-defective returns. We cover shipping costs for approved warranty replacements on our own shipping errors.
-
Restocking Fee (15%): A 15% fee may be deducted from your refund if:
- Returns are opened and found to be non-defective.
- Items are not cleaned/emptied prior to return
- The package was refused by the customer or carrier (shipping costs are also deducted in this case).
- Refund Methods: Refunds are issued to the original payment method or as store credit. We are not responsible for refunds to prepaid cards that are no longer in the customer's possession. We may require a copy of Photo ID to process certain refunds.
How to Initiate a Return
To start a return or warranty claim, please email us within the 30-day window.
Email: sales@gascityvapes.com
Please include the following in your email:
- Full Name
- Order Number
- Detailed explanation of the issue
- Photo or video proof of the defect (if applicable)
Once approved, you will receive further instructions. Replacements are shipping after the defective item is approved for warranty.
