Features Directly replaces mercury 4RM1B battery The ACR 1032 fits all ACR Firefly strobes; civilian 4F or 4G and military SDU-5/E USCG approved for 5-year replacement life (10 year storage life) Operational to -20C (-4F) Operational life-Exceeds 8 hours continuous to meet specifications

ACR 1032 LLB-1 LITHIUM BATTERY FOR ACR FIREFLY STROBES