Safety Battery
A lithium cell that will not ignite or explode under physical damage, overcharge, over-discharge or short circuit. Aluminium-laminate pouch construction supports special dimensions and form factors — suited to wearables, energy storage, electric vehicles and demanding electronics.
Standard Products
| Capacity (mAh) | Size L×W (mm) | Energy Density (Wh/kg) | Cycle Life @80% | Temperature (°C) |
|---|---|---|---|---|
| 3,000 | 63×70 | 220–260 | 800 | Charge 15~75 / Discharge -20~60 |
| 5,000 | 63×70 | 220–260 | 800 | Charge 15~75 / Discharge -20~60 |
| 10,000 | 60×110 | 220–260 | 800 | Charge 15~75 / Discharge -20~60 |
Dimensions can be customised to your requirement. The table lists standard products — please enquire for non-standard sizes.
Six Technical Characteristics
Custom Dimensions
Custom Li-ion service optimises performance, improves safety and integrates better with your device — covering capacity and voltage definition, form-factor design, testing and certification, and manufacturing with quality materials.
High Discharge Rate
Excellent high-rate discharge capability, releasing large amounts of energy in a short time for high-power applications, while maintaining stable charge/discharge performance at elevated temperatures.
Long Cycle Life
Notably low internal resistance raises energy transfer efficiency and reduces losses. Measured on NCM523: 80.0% of capacity retained after 2,500 cycles.
Electrode & Electrolyte Modification
Applicable to cathode/anode and powder surface modification to raise cell safety. Cathode powders: NCM, LFP, LNMO, LMFP. Anode powders: natural and artificial graphite. Also organic electrolytes.
Nail Penetration Test
Passes rigorous nail penetration testing, demonstrating reliability under extreme conditions. The cell remains stable even when pierced externally.
Cross-Section Cut Validation
Even in extreme scenarios such as being cut through by a power saw, the cell passes strict safety validation.
How the Penetration Test Is Performed
A nail of 3mm diameter is driven through the cell at a speed of 50mm/sec. Throughout the test the cell shows no fire and no explosion; structure and performance remain stable.
The test simulates the worst case of a cell being physically pierced in service — a condition under which a conventional lithium cell would go into thermal runaway from the resulting internal short. The Safety Battery passes this test and is BSMI certified.
Nail Penetration Test Footage
The cell is clamped in the test fixture and the nail is driven straight through the cell body at a fixed speed. At the moment of penetration there is no fire, no smoke and no explosion.
Cross-Section Cut — A Harsher Test Than Penetration
Penetration punches a single hole; a cross-section cut saws the cell clean through. The damage is far greater than penetration — a condition that would essentially never occur in service, and precisely for that reason the most convincing demonstration of safety.
The footage below is the measurement taken after the cut. On the left is a multimeter; on the right, the cell that has been sawn through. The full 2 minutes 45 seconds is unedited and the voltage holds steady at around 4.0 V throughout — the cell is still functioning after being cut, with no voltage collapse from an internal short. A conventional lithium cell would already be in thermal runaway.
Cross-Section Cut Validation
Full unedited voltage measurement after the cut. A stable voltage is the most direct evidence that no internal short has occurred.
NCM Discharge Rate Capability
From 0.1C to 5C, surface-modified NCM cathode material retains higher capacity than untreated material. Low internal resistance keeps performance strong at high discharge rates.
Want to know more about the Safety Battery?
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