Banshee marine batteries Replaces D27M 8027-127 900CCA Group 27 900CCA and can be used in both parallel and series for 24V, 36V, or 48V applications. These batteries must use only lithium-ion LiFeP04 chargers with this battery. Banshee batteries group 34M marine, RV, solar application LifePo4 lithium ion battery there is nothing like it. There are so many things about this new lightweight super powered battery to describe, but we are gonna try. If you're into boating, sailing, fishing, RV, or anything outdoors and you need power, Banshee has you covered. Our new super lightweight lithium ion LifePo4 battery is 1/3 the weightand has 3xs the life. Here are the highlights; CCA - 900, If you're boating or fishing and 900CCA won't get you started, it's too cold to be boating or fishing. Go home. Emergency start - If you ever accidentally run the battery down it has an emergency start function to get you home, and yes, it will recover. Dual terminal marine posts - Yes, real dual terminal marine posts - just like every other marine battery made since 1930. No need for adapters. Lightweight - Weighs 60% less than typical AGM or lead batteries. Extended life cycle - lasts 3X longer than AGM or SLA batteries. Additional features/details high power BMS “Battery Management System” - This will protect the battery from being overcharged, discharged or evenshort-circuiting. This feature regulates the amount of power being utilized and serves as an automatic shut-off system to protect the lithium-ion LiFeP04 cells. Green Energy - Non toxic, no acid, no lead. It's not a Battery, It's a Banshee