Triangle Battery The absolute best place to locate the weight of a battery is as close to the center of the frame as you can, and as low as possible. To move the weight of the battery pack to the center of the bicycle will make it handle better. Also choosing a central triangle battery will make the bike ride a lot better, and…it might give you the option of dramatically increasing the range. Frame space on a bicycle will always be at a premium, so…using more cells to get higher capacity often meant having heavier weight. Now, there are many high-current cell options. Using high-capacity and high-current cells to built the battery. This meant that no longer had to use a huge and heavy battery pack to get high-performance, or longer range. Triangle packs with 18650 cell, and here’s a list: Small size: 100 pcs of 18650 cell Medium size: 130 pcs of 18650 cell Large size: 140 pcs of 18650 cell BMS contstant current: 15-30-50 Amps 24V 15Ah / 20Ah / 25Ah / 30Ah / 35Ah 36V 15Ah / 20Ah / 25Ah / 30Ah / 35Ah 48V 15Ah / 20Ah / 25Ah / 30Ah / 35Ah 52V 15Ah / 20Ah / 25Ah / 30Ah / 35Ah 60V 15Ah / 20Ah / 25Ah / 28Ah 72V 12Ah / 15Ah / 18Ah / 20Ah / 25Ah Material Lithium Ion Battery Nominal Voltage 60V Nominal Capacity 28Ah Cell Assembly Sanyo NCR18650GA 3500mAh (10A discharge) 16 series with 8 parallel Built-in BMS (16S 50A BMS) Over-charge & dischargeprotection. Temperature control function. Short circuit protection. Balances the cells and ensures long cell life. Charge Charge Model CC / CV Charge Current 2A / 5A Charger BMS Charge Cut-off Voltage 67.2V Cell Overcharge Protection Voltage 4.2V / Cell Discharge Max Continuous Discharge Current 50A Peak Discharge Current 120A BMS Discharge Cut-off Voltage 44.8 +/-1V Cell Over-discharge Protection Voltage 2.8V / Cell Working Temperature Charge Temperature Range 0~45°C DischargeTemperature Range -20~60°C Cycle Life 800~1000 cycles Our certifications ISO9001, UL 1642,CE, ROSH Dimension 330*310*200*70*70*50 mm Weight about 6.5 Kg Application Electric Bike, Scooter, Motorcycle... Warranty 13 Months Part Included 1×60V28Ah Triangle Battery 1×67.2V5A Charger 1×Triangle Battery Bag Herculesi is one of white hair for battery business in China since 2008. 1. "Quality is our culture", passed ISO9001, UL 1642, CE, ROSH 2. "With us your money in safe, your bussiness in safe", full refund in case of bad quality. 3. OEM is also welcome in our factory! 4. "Quality is the soul of an enterprise", CE ROSH UN38.3 MSDS can be provided if needed. 5. Fully 13 months warranty with good after customer services. 6. Down tube/ Rear Carrier / Folding / Under Saddle E-Bike, Scooter, Motorcycle, Boat, Wheelchair, Solar Storage, EV, RV, Forklift LiFePO4 battery solution available. We provide high quality battery to clients all over the world and help cleints deliver battery from China to them by sea and by air at reasonable price. Also we provide necessary technical solution and warranty to you! Warnings Do not immerse the battery in water or seawater, and keep the battery in a cool dry surrounding if it stands by. Donot use or leave the battery near a heat source as fire or heater Use the battery charger specifically for that purpose when recharging. Do not reverse the position and negative terminals. Do not connect the battery electrodes to an electrical outlet. Do not discard the battery in fire or a heater. Do not short-circuit the battery by directly connecting the positive and negative terminals with metal objects. Do not transport or store the battery together with metal objects such as hairpins, necklaces, etc. Do not strike, trample or throw the battery. Do not directly solder the battery and pierce the battery with a nail or other sharp objects. Delivery & Shipping All batteries will be produced upon order confirmed, they will be sent out within 7 days after the payment verification.Shipping Time depends on destination and other factors. Free Shipping and FreeCustoms Taxes toUSA, UK, EU countries, Australia, Thailand, Dubai.... We are not responsible for any customs tax if occurs, but we will declare a reasonable low value to help buyer reduce it. 
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