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How to buy a laptop battery?
If you are not going to use the B21N1329 battery for some time (perhaps a month or more), remove it from your laptop in a partially charged (ideally 40%) state, and store it in a cool dry place away from sources of heat and light. 
Never over discharge or short a Lithium Ion B21N1329 Battery. All Lithium’s contain a circuit board for making sure the battery is never over Discharged but if you store the B21N1329 battery at 0% for a prolonged period the cells can become irreversibly damaged.
Avoid excessive heat. Do not expose the B21N1329 battery to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can't create as much power.
New B21N1329 Batteries Need to be cycled a few times at least. Fully charge new battery packs before use. New pack needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity.
Don't leave the Battery in a constant state of charging up that will reduce the life cycle of the battery. If you work with it plugged into the mains better to store it see above.
Fast Shipping
Your order will be dispatched within 48 hours. This means that it takes 48 hours to prepare before shipping, and then your goods will be delivered within 7 - 15 business days. We offer cheap shipping on all orders Fast shipping and tracking number email notification.
superior quality
Each of our batteries is engineered to be 100% compatible and thoroughly tested before it leaves the factory floor and because we take advantage of the latest battery technology, we offer the highest-capacity batteries on the market to power your laptop longer.
1-year warranty
Shop with confidence! Laptop Battery Depot stands behind its products by carrying a 1-year warranty on most of our products. If you are not happy with your purchase, we offer a 30-day money-back guarantee with no questions asked.
Customer Service
The customer is king. We know that building trusting, long-term relationships with our customers is key to our collaborative success.Prompt email response and good communication.Simple procedures for merchandise return,exchange,or replacement.
