For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
Amprius SA110 18650 Cell – 4000mAh – Ultra-High-Energy Lithium-Ion Battery - Check availability
Continuous discharge: 12A
The Amprius SA110 18650 4000mAh is an ultra-high-energy lithium-ion cell designed for builds where maximum runtime and low weight matter more than extreme current output.
With 4000mAh nominal capacity, 14.08Wh nominal energy, 3.52V nominal voltage, and up to 12A continuous discharge, the SA110 is a strong fit for long-endurance drones, aviation platforms, lightweight mobility systems, flashlights, portable electronics, and other runtime-focused battery packs.
This cell is best treated as a capacity-first 18650. It should be used in a properly engineered battery pack or host device with suitable protection, thermal monitoring, and conservative current management for best life and safety.
Specifications:
| Model | Amprius SA110 |
| Alternate Marking | INR18650/40 |
| Size | 18650 |
| Nominal Capacity | 4000mAh |
| Nominal Energy | 14.08Wh |
| Nominal Voltage | 3.52V |
| Max Voltage | 4.20V |
| Min Discharge Voltage | 2.50V |
| Max Continuous Discharge | 12A (≈3C) |
| Standard Charge Current | 2.0A recommended |
| Max Charge Current | 4.0A (1C) |
| Chemistry | Lithium-ion (silicon-anode platform / Ni-based positive electrode) |
| Rechargeable | Yes |
| Approx. Weight | 48g ±2g |
| Dimensions | 18.35 ±0.15mm diameter × 65.05 ±0.15mm height |
| Operating Temperature | Charge: 0°C to 60°C / Discharge: -20°C to 60°C |
| Cycle Life | ≥500 cycles to 80% of original capacity at +2A charge / -4A discharge to 2.75V |
| Datasheet | Official public datasheet URL not located — replace with your vendor or manufacturer PDF if available |
Applications:
- ✅ Long-Range E-Bikes
- ✅ Energy Storage Modules
- ✅ Portable Power Stations
- ✅ Solar Backup Battery Packs
- ✅ Endurance-Focused Custom Builds
DIY500AMP.COM Design – Ultra-High-Energy, Runtime-First Performance
⚠️ Safety Warning for Lithium-Ion Battery Usage
This cell is a rechargeable lithium-ion battery. Mishandling, short-circuiting, overheating, overcharging, puncture, crushing, or physical damage can cause fire, burns, or serious injury.
The SA110 should be used in a properly engineered battery pack or host device with over-charge, over-discharge, over-current, over-temperature, and short-circuit protection. Temperature should be monitored during charge and discharge.
Important Usage Guidelines:
- Use in a Properly Protected Battery Pack / Host Device
- Monitor Temperature During Charge and Discharge
- Prefer Conservative Current Draw for Best Life
- Spot Weld Only – Do Not Solder Directly
- Do Not Use if Wrap or Insulator Is Damaged
- Prevent Shorts – Keep Away from Loose Metal Objects
- Do Not Overcharge, Over-Discharge, Crush, Puncture, or Burn
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
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Wow, these cells are great!
I purchased some of these tabless cells to try on my 1S 3" HD Toothpick drone build, and, albeit a bit heavy for 1S, it flies pretty well. Not a freestyle monster, but an endurance beast with decent send. These cells shrug off the demands of a BETAFPV Matrix HD AIO flight controller/12A ESC and some 1202.5 11000KV motors. I'm getting 15+ minutes of speedy flight time from a single cell trying not to go below 3.2V, and about 20+ minutes cruising. Love these cells and will definitely buy more when time comes, only from DIY500AMP, who are terrific!
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