What is the LG M58T INR21700 cell used for?
The LG INR21700-M58T (M58T) is one of the highest-capacity 21700 cells on the market. With 5800mAh capacity and 12.5A maximum continuous discharge current, it excels wherever range and runtime are the priority:
- 🚲 Electric bicycles (e-bike) – ideal for 36V and 48V packs. A 10S2P pack (20 cells) delivers ~418Wh, range up to 40+ km.
- 🛴 Electric scooters – high capacity with low pack weight.
- 🏠 Energy storage systems (ESS / solar) – home battery buffers for photovoltaic systems, operating range −20°C to 60°C.
- 🔦 Tactical flashlights and outdoor gear – long runtime, wide temperature range.
- 🛠️ DIY battery packs – popular choice for custom 21700 nS/mP configurations.
- ♻️ E-mobility battery rebuilds – replace worn cells with higher capacity LG M58T originals.
Technical specifications – LG INR21700-M58T
| Model | INR21700-M58T |
|---|---|
| Technology | Li-Ion NMC+ (Li(Mn,Ni,Co,Al)O₂) |
| Format | 21700 (⌀21.4 mm × 70.5 mm) |
| Nominal capacity | 5800 mAh |
| Minimum capacity | 5570 mAh |
| Minimum energy | 20.0 Wh |
| Nominal voltage | 3.59 V |
| Max. charge voltage | 4.20 V |
| Cut-off voltage | 2.50 V |
| Standard charge current | 1120 mA (CC-CV) |
| Max. charge current | 2700 mA (4.20V) · 5000 mA (4.0V) |
| Max. continuous discharge | 12.5A (0–35°C) · 10A (35–45°C) · 7.5A (45–60°C) |
| Pulse discharge current | 15A (15s, 0–60°C) |
| Charge temperature | 0°C to 50°C |
| Discharge temperature | −20°C to 60°C |
| Cycle life | ≥80% capacity after 500 cycles |
| Weight | 73 g |
| Protection | Unprotected – requires BMS |
| Certifications | UN38.3, UL1642, IEC/UL62133-2, CB, PSE |
LG M58T vs competition – which cell to choose?
| Cell | Capacity | Max. current | Best for |
|---|---|---|---|
| LG M58T INR21700 ← This product | 5800 mAh | 12.5A | E-bike, ESS – max range |
| Samsung 50S INR21700 | 4900 mAh | 35A | Power tools, high current |
| BAK 21700CG-50 | 5000 mAh | 15A | ESS, moderate current |
| EVE INR21700-40P | 4000 mAh | 40A | EV high-drain |
| Samsung 35E INR18650 | 3450 mAh | 8A | 18650 format, low current |
Conclusion: If maximum range at up to 12.5A continuous discharge is the priority – the LG M58T has no equal in the 21700 format.
Need a ready-made battery instead of individual cells?
The LG M58T is an excellent choice for building your own battery pack. If you’re looking for a complete, plug-and-play solution, check out our battery range:
- E-bike batteries – ready-made 36V and 48V packs for electric bicycles
- Range extender batteries – external add-on packs for e-bikes and electric scooters
- Replacement batteries – drop-in replacements for popular electric scooters
Safety – important before use
- ⚠️ Unprotected cell – always use a BMS in your battery pack
- ⚠️ Do not exceed 4.20V charge voltage
- ⚠️ Do not discharge below 2.50V
- ⚠️ Charge on a fireproof surface, never leave unattended
- ⚠️ Do not short-circuit the terminals
- ⚠️ Dispose of according to WEEE regulations
Frequently asked questions
What voltage is the LG M58T cell?
Nominal voltage: 3.59V. Max charge voltage: 4.20V. Cut-off voltage: 2.50V. Compatible with devices designed for 3.6–3.7V Li-Ion cells.
How many LG M58T cells do I need for an e-bike?
Typical configurations: 36V 10S2P = 20 cells (~418Wh, range ~40km). 48V 13S2P = 26 cells (~557Wh). 48V 13S4P = 52 cells (~1114Wh, range 80–100km).
What is the difference between LG M58T and Samsung 50E?
LG M58T has higher capacity (5800 vs 4930mAh) and higher max discharge current (12.5 vs 10A). Better choice wherever pack energy and range are the priority.
How long does it take to charge the LG M58T?
At standard 1120mA – approx. 5.5–6 hours. At fast charge 2700mA – approx. 2.5 hours. Requires a CC-CV charger with 4.20V cutoff.
Is the LG M58T cell genuine?
Yes. CityLion sells only factory-original cells from certified distributors. UN38.3 and UL1642 certificates available on request.
Do you ship Li-Ion cells internationally?
Yes – we ship across the EU. Packages comply with ADR/IATA Class 9 requirements. Delivery 2–5 business days.
Frequently asked questions
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