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
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