The YTST-C01 relies on a built-in Protection Circuit Module (PCM) to prevent overcharge and over-discharge. However, you must still follow best practices:
DO:
DON'T:
3.1 Initial capacity
At 0.2 C, average capacity = 2153 mAh (102.5% of nominal). At 1 C, capacity = 2058 mAh (98.0%). At 3 C, capacity reduced to 1724 mAh (82.1%) due to ohmic polarization.
3.2 Cycle life
After 500 cycles: 82.3% remaining capacity. Linear extrapolation suggests end-of-life (80% SOH) at ~580 cycles. DC internal resistance increased from 38 mΩ to 43.5 mΩ. ytst-c01 battery
3.3 Thermal behavior
Maximum surface temperature during 2 C discharge: 42.8 °C (ambient 25 °C). At 3 C, peak reached 51.2 °C, exceeding vendor’s “safe” 50 °C limit.
3.4 Impedance spectroscopy
Charge-transfer resistance rose from 22 mΩ to 31 mΩ after 500 cycles, suggesting electrode-electrolyte interface degradation. YTST-C01 Battery — Complete Essay Charging the YTST-C01
One of the primary reasons users search for the YTST-C01 is physical fitment. The battery is generally a rectangular prism or a cylindrical pack of 2-4 cells shrink-wrapped together.
Common dimensions (Rectangular pack):
Because this is a proprietary shape, do not guess. Use a digital caliper to measure your original battery's length, width, and height before ordering a replacement.