My formal Pinoy colleague Mandy surrendered Sg PR, sold his HDB and withdraw all CPF back to Pinoyland, after a year met him in another company, name Armando, start another round to scam through the system again.
Beside lithium substrate, these can happen to factory with high risk materials handling, our subject here is to use quality concealed batteries pack, not any source without accredited certification.
If solely due to lithium used, then the incident rate can be high, authority should look at quality of batteries used, eg carry a certain certification from an accredited source.
I think the products should follow international standard, from materials (purity of substrate and connectivity), design (strong insulation and package, free from internal stress and humidity intrusion), manufacturing (QC per international standard) and assembly, it must carry a certification...