LG INR21700-M50LT 5000mAh High-Capacity 21700 Battery 2-Piece Set with XTAR MC2 Smart Charger | 7.275A Continuous with 60°C Thermal Cutoff
Description
Why This Bundle
The LG M50LT is a long-life variant of the M50 family, carrying the same 5000mAh-class capacity while offering roughly double the rated cycle life (approximately 1000 cycles) compared to the standard M50T — making it a strong pick for e-bikes, ESS packs, and other applications where you'll be cycling the battery repeatedly over years of use. This bundle pairs 2 genuine LG INR21700-M50LT batteries with the XTAR MC2 — a compact, USB-C powered dual-slot charger that intelligently adjusts charging current and includes 0V activation for over-discharged cells. Everything you need to charge and maintain your cells, ready out of the box.
LG INR21700-M50LT Specifications
| Item | Spec |
|---|---|
| Model | LG INR21700-M50LT (Flat Top) |
| Nominal Capacity | 5000mAh (approx. 4800mAh typical) |
| Nominal Voltage | ~3.6–3.63V |
| Max Charge Voltage | 4.20V |
| Standard Charge Current | ~1.44A |
| Max Charge Current | ~3.36–3.4A |
| Max Continuous Discharge | ~7.275A (60°C thermal cutoff) |
| Discharge Cutoff Voltage | 2.5V |
| Cycle Life | ~1000 cycles (approx. 2× the standard M50T) |
| Chemistry | Li-ion, energy-focused, long-cycle-life formulation |
| Cell Size | 21700 (approx. Φ21.15–21.44mm × 70.3–70.4mm, approx. weight 67.7–69.25g) |
| Terminal Type | Flat Top only |
| Protection Circuit | None (unprotected cell) |
| Typical Use | E-bikes, ESS modules, industrial devices, long-runtime and long-cycle-life battery pack builds |
Note: This is an energy/runtime-focused cell, not a high-drain one — it's built for applications that need maximum capacity and long-term cycle durability rather than extreme continuous current.
This is an unprotected cell — avoid mixing with batteries of a different brand, model, or charge state, and inspect the wrap for damage before every use to prevent short circuits.
The Charger: XTAR MC2
- USB-C input: DC 5V/1A, works with USB wall adapters, power banks, laptops, and car chargers
- Dual independent charging slots: charge two batteries simultaneously with individual monitoring
- Intelligent current adjustment: automatically sets charging current to 0.5A×2 (with a 5V/1A source) or 0.25A×2 (with a lower-power source)
- 0V Activation: helps recover batteries that have over-discharged
- Multiple safety protections: reverse-polarity protection, short-circuit protection, temperature monitoring
- Compatible with protected 20700/21700 cells (current USB-C generation)
- Ultra-compact & lightweight: just 24g, 92mm × 40mm × 32mm
XTAR MC2 – Supported Battery Types & Voltage
Compatible with 3.6V/3.7V Li-ion batteries, including the LG M50LT (21700) in this bundle, across a length range of approximately 31mm to 71.4mm — covering everything from 10440 up through 21700 and 26650 cells.
End-of-charge voltage: 4.20±0.05V · End-of-charge current: ≤120mA
Compatibility Notes
The MC2's charging slots accommodate battery lengths up to roughly 71.4mm, which comfortably fits the M50LT's ~70.3–70.4mm length, including its Flat Top terminal.
Important: This is a large 5000mAh cell, and the MC2 charges at a maximum of 0.5A per slot. A full charge at that rate will take considerably longer than it would on a high-current charger — expect several hours per full charge. The MC2 is best suited here as a portable, gentle-charging backup rather than your primary fast charger for these cells.
What's Included
- LG INR21700-M50LT Battery × 2
- XTAR MC2 Charger × 1
- USB Cable × 1
- User Manual × 1
Safety Tips
- Store batteries in a proper case, keeping them away from loose metal objects to prevent short circuits
- Never disassemble, puncture, burn, or submerge the batteries
- Charge only with a genuine, compatible charger such as the XTAR MC2
- The M50LT is an unprotected cell intended for compatible, purpose-built devices such as e-bikes, ESS modules, and engineered battery packs
- Never discharge below 2.5V or charge above 4.2V
FAQ
Q: Can the XTAR MC2 charge LG M50LT batteries safely? A: Yes, the MC2 correctly detects and charges 3.6V/3.7V Li-ion cells including 21700s like the M50LT, with proper 4.2V cutoff voltage. Just be aware the charging current is much lower than what this cell can typically accept, so a full charge will take longer than it would on a high-current charger.
Q: What makes the M50LT different from other M50-family cells? A: The M50LT is specifically built for longer cycle life — roughly 1000 cycles, about double the rated cycle life of the standard M50T — while keeping the same general 5000mAh-class capacity and moderate discharge profile.
Q: Is the M50LT a high-drain cell? A: No. It's built primarily for energy density, runtime, and long-term cycle durability, with a moderate continuous discharge rating around 7.275A (60°C cutoff). It's better suited to e-bikes, ESS, and long-runtime packs than to devices demanding extreme continuous current.
Q: Will a 21700 battery actually fit in the MC2? A: Yes. The MC2's slots accommodate batteries up to roughly 71.4mm in length, which covers the M50LT's length comfortably.
Q: How long will it take to fully charge an M50LT on the MC2? A: Since the MC2 charges at up to 0.5A per slot and the M50LT has a 5000mAh-class capacity, expect a full charge to take several hours. This charger is better suited as a portable or backup option for these cells rather than a primary fast charger.
Q: Can I charge both batteries at the same time? A: Yes. The MC2 has 2 independent slots and can charge both simultaneously, automatically adjusting current based on your power source.
Q: What's in the box? A: 2 LG INR21700-M50LT batteries, 1 XTAR MC2 charger, a USB cable, and a user manual.
Shipping and Returns
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Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
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Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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Easy Returns: We want you to be completely satisfied. If you're not, you can return your product within 30 days of receiving your order. Please ensure the items are unused and in their original condition. For return instructions, please contact our support team.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security
Refund Policy
OneAndes Return & Refund Policy
At OneAndes, we are committed to providing high-quality cylindrical lithium-ion batteries for your drones, vacuums, garden tools, and other power needs. If you are not completely satisfied with your purchase, we are here to help. Please read our full return policy below before initiating a return.
1. Return Window
You have 30 calendar days from the date you received your item(s) to request a return. Any return request submitted after 30 days will not be eligible for a refund or exchange.
2. Eligibility Conditions
To qualify for a return, all items must meet the following conditions:
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Condition: Items must be unused, undamaged, and in the same condition that you received them.
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Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
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Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
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Batteries that have been installed, used, or show any signs of wear.
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Items marked as “Final Sale” or “Clearance” at the time of purchase.
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Customized or special-order products.
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Gift cards.
If a returned item fails to meet these conditions, we reserve the right to deny the return or charge a restocking fee.
3. How to Initiate a Return
Follow these steps to return your product:
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Contact Us: Email our support team at support@oneandes.com with your order number and the reason for return. We aim to respond to all return requests within 24 hours on business days.
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Receive RMA: We will provide you with a Return Merchandise Authorization (RMA) number and return instructions. Do not ship any item without an RMA number.
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Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
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Ship to Our US Warehouse: Ship the package to the following address:
OneAndes Returns
10320 6th St
Rancho Cucamonga, CA 91730
USA*Important: Lithium-ion batteries are classified as hazardous materials (Class 9). Please follow the shipping guidelines provided in Section 4 below. We recommend using a trackable shipping service and purchasing shipping insurance, as we cannot guarantee receipt of your returned item.*
4. Return Shipping Costs
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Defective or Incorrect Items: If the item you received is defective, damaged in transit, or different from what you ordered, OneAndes will cover the return shipping cost. In this case, we will provide you with a prepaid return shipping label.
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Buyer’s Remorse / Non-Defective Returns: If you are returning an item for any other reason (e.g., no longer needed, ordered the wrong model), you are responsible for the return shipping costs. You must prepay the return shipping cost using a trackable carrier that accepts lithium batteries. We do not provide prepaid return labels for non-defective returns.
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Lithium Battery Shipping Regulations: By law, all returns must be shipped in compliance with applicable dangerous goods regulations. We will provide guidance on proper packaging and labeling. Failure to comply may result in carrier refusal, seizure, or additional fees. We are not responsible for returned items lost or rejected by the carrier due to improper shipping.
5. Refunds
Once we receive and inspect your return at our Rancho Cucamonga, CA facility, we will notify you via email of the approval or rejection of your refund.
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Approved Refunds: If approved, your refund will be processed to your original method of payment within 5 to 10 business days. Please note that depending on your bank or credit card issuer, it may take additional time for the credit to appear on your statement.
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Partial Refunds: In certain situations, only partial refunds may be granted:
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Items not in original condition, missing parts, or damaged for reasons not due to our error.
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Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
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Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
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Restocking Fee: We do not charge a restocking fee for defect-free returns, but we may deduct the return shipping cost, which will be deducted from your refund.
6. Exchanges
We replace items only if they are defective or damaged upon arrival. If you need to exchange a defective item for the same product, please contact us at support@oneandes.com. Exchanges are subject to product availability.
If you ordered the wrong battery size or model, please follow the standard return process above and place a new order for the correct item.
7. Damaged or Missing Items
If your package arrives visibly damaged, please take photos of the package before opening and contact us immediately. We will work with the shipping carrier to file a claim and arrange for a replacement or refund. Damaged or missing item claims must be reported within 7 calendar days of delivery. For immediate assistance, you may also call us at (213) 316-8849.
8. Order Cancellation
You may cancel your order without penalty if it has not yet been shipped. To cancel, email us at support@oneandes.com as soon as possible. If the order has already been processed or shipped, you will need to follow the standard return process upon receipt.
9. Warranty
All OneAndes batteries are backed by a 12-month limited warranty against defects in materials and workmanship. This warranty does not cover damage caused by misuse, improper charging, unauthorized modifications, normal wear and tear, or use outside of manufacturer specifications. For warranty claims, please contact our support team.
10. Contact Us
If you have any questions about our Return & Refund Policy, please reach out:
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Email: support@oneandes.com
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Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
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Mailing Address: 10320 6th St, Rancho Cucamonga, CA 91730, USA
We aim to respond to all inquiries within 24 hours during business days. Please include your order number for faster assistance.