Lithium Ion Battery 12 Volt 12 Ah with Charger Create Your Own Battery is most likely bad

Battery is most likely bad if during the charge cycle the red light begins flashing ( make sure both switches are turned off during charging)

The M2 is little brother to the M4

Enables 20 inches of vertical adjustment

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Strain relief hose protects M4 pump threads from damage

Lithium Ion Battery 12 Volt 12 Ah with Charger Create Your Own Battery is most likely badLithium ion battery in a brick style case. See picture showing maximum bend angle for J2 terminals to engage battery compartment spring plates (15 30 degrees). Includes dedicated lithium ion charger. See warning below****. Fits all M4 models. Provides 50% more power than the standard 8 ah lead acid at 35% the weight. (Weighs only 1. 75 lbs versus 5 lbs for the lead acid. Energy density 82 watt hours per pound versus 19. 2 watt hours per pound lead