This is NOS and has been out of packaging for some time. Never used, but the brass is tarnished a dab from age. All 7 pieces (3 and 1/2 sets) have 1/4 inch female pipe threads; The male quick connectors are numbered HK B2-K16 and the female connectors are labeled SERIES*2-HK.
High Current 10A 4 Series Lithium Battery Protection Board Description: - 4 series lithium battery protection board - Suitable for nominal voltage of 14.4V lithium battery, 14.8V lithium battery, 16.8V lithium battery pack. - With automatic activation, - Protection is automatically canceled after recovery protection conditions, - No need to activate the charger, - Easier to use.
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