![I just bought my first HPA build used. Two questions. What kind of smart charger should I get for this tiny 7.4v battery and what is that white paper looking thing inside I just bought my first HPA build used. Two questions. What kind of smart charger should I get for this tiny 7.4v battery and what is that white paper looking thing inside](https://preview.redd.it/i-just-bought-my-first-hpa-build-used-two-questions-what-v0-8jk2zz93hjsa1.jpg?width=3024&format=pjpg&auto=webp&s=c6f87a0d3f8a7b0a56519f402938c63967cf86db)
I just bought my first HPA build used. Two questions. What kind of smart charger should I get for this tiny 7.4v battery and what is that white paper looking thing inside
![Amazon.com: Clover Airsoft - Amped HPA 7.4V 250 MaH LiPO Battery - JST Connector : Sports & Outdoors Amazon.com: Clover Airsoft - Amped HPA 7.4V 250 MaH LiPO Battery - JST Connector : Sports & Outdoors](https://m.media-amazon.com/images/I/51ObrKsRchL.jpg)
Amazon.com: Clover Airsoft - Amped HPA 7.4V 250 MaH LiPO Battery - JST Connector : Sports & Outdoors
![ASG 7.4v 250mAh FCU Battery for HPA powered Airsoft Rifles, Accessories & Parts, Batteries, LiPoly / Lithium Cell Batteries, 7.4V Lithium Polymer Batteries - Evike.com Airsoft Superstore ASG 7.4v 250mAh FCU Battery for HPA powered Airsoft Rifles, Accessories & Parts, Batteries, LiPoly / Lithium Cell Batteries, 7.4V Lithium Polymer Batteries - Evike.com Airsoft Superstore](https://www.evike.com/images/large/asg-100223.jpg)