No cell protection or charging control is present
Cheap solar lights lack charging management, allowing 6 V panels to overcharge Li-Ion 18650 cells while NiMH cells naturally throttle current.
- Field
- hardware and chips
- What they did
- Researchers found that an outdoor solar light contained an unprotected 18650 Li-ion battery without a charging management system, leading to over-discharge.
- Why it matters
- This is dangerous because Li-ion batteries cannot automatically limit charging current like NiMH batteries, which increases the risk of fire.
#li-ion#safety#solar power#battery management



