Tier 1 (Top OEM / EV-grade manufacturers)
These are the most trusted, widely used in EVs, power tools, and high-end packs.
Samsung SDI
• INR21700-50E ? ~4900–5000 mAh
• INR21700-40T ? ~4000 mAh
• INR21700-30T ? ~3000 mAh
👉 Known for: balance of capacity + power ?
LG Energy Solution
• INR21700-M50 / M50LT ? ~4800–5000 mAh
• INR21700-MJ1 (lower tier variant) ? ~3500 mAh
👉 Known for: stability and thermal reliability ?
Panasonic (Sanyo)
• NCR21700A / B ? ~3400–5000 mAh
👉 Known for: high energy density & longevity ?
Murata (Sony)
• US21700VTC6A ? ~3000–4100 mAh
👉 Known for: high discharge (power cells), lower capacity ?
Tesla (with Panasonic)
• Custom 21700 cells (Model 3/Y) ? ~4800–5000 mAh (est.)
👉 Focus: energy density + cost optimization ?
Molicel (E-One Moli Energy)
• P42A ? ~4200 mAh
• M50A / M65A ? ~5000–6500 mAh (newer high-capacity)
👉 Known for: high-drain performance ?
🔋 Tier 2 (Major Chinese & emerging OEMs)
Used heavily in EV supply chains and large battery packs.
CATL (Contemporary Amperex Technology)
• L2170P ? ~4800 mAh
👉 Major EV supplier (Tesla China, etc.) ?
EVE Energy
• Typical 21700 cells ? ~4000–5000 mAh
👉 Large-scale production OEM ?
Lishen (Tianjin Lishen)
• Typical range ? ~4000–5000 mAh
👉 Government-backed EV battery supplier ?
BAK Battery
• High-capacity models ? ~5000–5500 mAh
👉 Focus on energy density ?
🔋 Tier 3 (Consumer / niche / high-capacity brands)
Often rewrapped or niche-market cells (flashlights, vaping, etc.)
Vapcell
• F60 ? ~6000 mAh
XTAR
• 21700 ? ~6000 mAh
Quick ChatGPT pull of some cell manufacturers around the 21700
I am going to throw a couple hundred at it. See what comes of it.
By the way it looks 6600mAh is a big step up, got my ear perked.