Description 48V Lithium li-lon/Lifepo4 battery One Special 13(Li-ion)/16(Lifepo4) cells PCB with balance function is installed with battery pack to protect battery from over charging, over discharging and over drain Voltage : 48V Cut-off voltage: 35V(Li-ion)/37.6V(Lifepo4) Max. discharging current: 40/80 Amp Max Continuous Discharging Amperage: 40 Amps Charging Current: 85% capacity after 1000 cycles. Lifecycle of single cell: >85% capacity after 1000 cycles,> 70% capacity after 1200 cycles. (<1C discharge rate and 85% capacity after 1000 cycles.* Lifecycle of single cell: >85% capacity after 1500 cycles, > 70% capacity after 3000 cycles. (<1C discharge rate and <1C charge rate)* Dimension/Weight: 30AH:255*165*100mm/8.4KG 40AH:250*160*125mm/9K 52V 5A Charger * Good safety performance:The structure of the battery will not change during the charging and discharging process, will not burn or explode, and it is still very safe even under special conditions such as short circuit, overcharge, squeeze, and acupuncture. * Long cycle life:The 1C cycle life of lithium Lifepo4 phosphate batteries is generally up to 2000 times. Under the same conditions, lithium iron phosphate batteries can be used for 7 to 8 years. The cycle life of a ternary battery is more than 1,000 times, while the cycle life of a long-life lead-acid battery is about 300 times. * Safety and environmental protection:Lithium Lifepo4 phosphate battery does not contain any heavy metals and rare metals, is safe, non-toxic and pollution-free, and is an absolute green battery. *30 days free returns ! * Return is acceptable if the item is in its original condition. Return should be made within 30 days after the buyer receives the item at the seller's expense. Refund for the item will be issued within 1 business day after we receive the items back. We can pay for the return shipping fee. *1 year warranty * The battery has 1-year warranty. If any question, please feel free to let we know All products will be shipped within 1 working day upon payment cleared *All items will be shipped to buy's paypal address. Please check your paypal address correctly. * Send by FedEx Ground or UPS Ground * Delivery time:3-5 working days free shipping. (If you want to use express delivery, please contact us.) * We accept payments in paypal only * When you pay it, please leave your phone number to facilitate faster and give you transportation * All the buyers must submit payment within 7 days of auction close. If payment is not received, the item will be relisted, a Non-Paying Claim alert On Sep 1, 2022 at 02:56:06 PDT, seller added the following information: