Introduction to military operations, lithium ion may be damaged by ballistic impactThe possibility of an ion battery worn on the body by military personnel and an heat release reaction may result in injury. This paper examines the impact of impact on batteries that may be worn out by front or rear armor. Methods Li-The ion battery is subjected to ballistic impact without and in combination with the armor using 7. 62 × 39mm ammunition (average speed = 769 m/s) with a charge of up to 40%. An outdoor range was also used to study the effect of penetration impact on the rechargeable battery. As a result, due to ballistic impact, the back features were reduced by the battery pack included between the fabric armor and the armor plate, but the battery was crushed and mechanically destroyed. Ballistic impact on the battery mounted in front of the armor plate causes the battery to be perforated. Temperature, fire and toxic gas emissions increase when the battery is hit through. Conclusion the battery provides limited ballistic protection, refuting the assumption that the battery can replace or enhance the existing armor solution. Due to heat/flame and toxic emissions, the ballistic impact of the rechargeable battery can cause damage. It is recommended to place the battery in a position where it can be quickly removed from contact with the body. Introduction to military operations, lithium ion may be subject to ballistic impact damageThe possibility of an ion battery worn on the body by military personnel and an heat release reaction may result in injury. This paper examines the impact of impact on batteries that may be worn out by front or rear armor. Methods Li-The ion battery is subjected to ballistic impact without and in combination with the armor using 7. 62 × 39mm ammunition (average speed = 769 m/s) with a charge of up to 40%. An outdoor range was also used to study the effect of penetration impact on the rechargeable battery. As a result, due to ballistic impact, the back features were reduced by the battery pack included between the fabric armor and the armor plate, but the battery was crushed and mechanically destroyed. Ballistic impact on the battery mounted in front of the armor plate causes the battery to be perforated. Temperature, fire and toxic gas emissions increase when the battery is hit through. Conclusion the battery provides limited ballistic protection, refuting the assumption that the battery can replace or enhance the existing armor solution. Due to heat/flame and toxic emissions, the ballistic impact of the rechargeable battery can cause damage. It is recommended to place the battery in a position where it can be quickly removed from contact with the body. The project is considered by IH and DJC. DJC wrote this paper from AR's MSc paper. IH and AR commented on the manuscript. Funding authors have not announced specific funding for this study from any public, commercial or non-commercial funding agency --for-profit sectors. No one declared a competitive interest. Patient consent is not required. Ethical approval this work does not involve anyone and therefore no approval is required. Uncommissioned source and peer review; External peer review.