MILWAUKEE Battery High Output 5.5 Ah, 18V M18HB5.5 The new M18™ 5.5 Ah HIGH OUTPUT™ battery pack offers up to 50% more power over M18™ REDLITHIUM™ battery packs Patented REDLINK™ electronics protect the battery pack from the harsh conditions on the jobsite for optimal performance Runs up to 50% cooler than other M18™ REDLITHIUM™ battery packs in heavy-duty applications, allowing tradespeople to use their cordless tools harder and longer than ever before Replaces the cable on the Construction site and offers more runtime than ever before Durable metal frame battery construction with shock-sensitive separators prevents battery failure in the event of severe vibration or drops Built-in battery indicator helps users maximize battery life efficiency Individual battery life Built-in battery life indicator helps users maximize battery life efficiency Individual...