Low maintenance 7.4V 6.6AH 18650 lithium ion battery pack for water quality sampler from Guangdong Province, China, NS-2S3P-18650-6600 7.4V 6.6AH 18650 lithium battery water quality sampler. A protection board can be added to avoid overcharging and overdischarging of the battery, which can also prolong the service life of the battery. The 18650 lithium battery has a long service life, and the cycle life can reach more than 500 times during normal use, which is more than twice that of ordinary batteries, suitable for United States, Japan, Bhutan, Dominica, Latvia, Pakistan, American Samoa, Seychelles, Thailand and other countries & regions. We want to establish long-lasting business connection with regional distributor. If you are interested in our water quality sampler 18650 lithium ion battery pack or intend to be our local agent, please do not think twice to email sales@nuranu.com or call: +86-13823274651.