Ultra-Thin LiPo Battery - 0.1mm thickness you can find here
I've run this old pack through the balance charge three times. Every time the charger times out and one cell is still stuck a 3.92V. Is it pooched? : r/rccars
Amazon.com: 1Pcs 083040 3.7V 1000mAh Polymer Lipo Battery with PCM Rechargeable : Health & Household