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{"title":"18V 4.0Ah High Capacity Lithium Power Tool Battery Packs With LED Digital","imgUrl":"https:\/\/img.chinax.com\/nimg\/27\/09\/5478b7b1c533a90418629ec51f12-200x200-1\/18v_4_0ah_high_capacity_lithium_power_tool_battery_packs_with_led_digital_display.jpg","attrs":{"Price":"Negotiable","Weight":"0.7kg(1.54lb)","Certification":"CE\/RoHS\/UN38.3\/MSDS","Cathode materials":"LiNiMnCoO2"}}
{"title":"5Ah 12V Lithium Ion Power Tool Battery Packs 500 Cycles Grade A Battery Cell","imgUrl":"https:\/\/img.chinax.com\/nimg\/44\/36\/6ea91d902f224c932beb2bb0b618-200x200-1\/5ah_12v_lithium_ion_power_tool_battery_packs_500_cycles_grade_a_battery_cell.jpg","attrs":{"Price":"Negotiable","Battery Cell":"Grade A","Certification":"CE\/RoHS\/UN38.3\/MSDS","Cycle Life":"500 cycles"}}
{"title":"12V 3AH Lithium Ion Power Tool Battery Packs Lightweight Overcharge Protection","imgUrl":"https:\/\/img.chinax.com\/nimg\/49\/d6\/fcacce3ab8b76056eb25adaf8525-200x200-1\/12v_3ah_lithium_ion_power_tool_battery_packs_lightweight_overcharge_protection.jpg","attrs":{"Price":"Negotiable","Dimension":"87*64*60mm","Certification":"CE\/RoHS\/UN38.3\/MSDS","Cathode Materials":"LiMn2O4"}}
{"title":"14.4V 3AH 300 Cycles Lithium Battery Pack For Power Tool Rechargeable Battery","imgUrl":"https:\/\/img.chinax.com\/nimg\/78\/ba\/e2a4da0cbe03a9ec577ca5bee133-200x200-1\/14_4v_3ah_300_cycles_lithium_battery_pack_for_power_tool_rechargeable_battery_pack.jpg","attrs":{"Single gross weight":"0.420 kg","Place of Origin":"Guangdong, China","Battery type":"lithium battery","Model Number":"BL1445"}}
{"title":"3.2V 30Ah LiFePO4 Lithium Iron Battery 4000 Cycle Wide Temperature Range","imgUrl":"https:\/\/img.chinax.com\/nimg\/a1\/b6\/ff27e9bb51a2b52d228dab1d83aa-200x200-1\/3_2v_30ah_lifepo4_lithium_iron_battery_4000_cycle_wide_temperature_range.jpg","attrs":{"Price":"Negotiable","Cathode Materials":"LiFePO4","Weight":"660g","Battery Type":"Solid state"}}
Cell Model: N21700CK-55E Nominal Voltage: 3.6V Typical Capacity: 5.5Ah (5500mAh) Weight: ≤72g Energy: 19.8Wh Cell Chemistry: NMC (LiNiMnCoO₂) Cycle Life: ≥500 The BAK N21700CK-55E is a high-performance cylindrical lithium-ion cell featuring 5.5Ah capacity and 3.6V nominal voltage. With a total energy output of 19.8Wh, it is well-suited for applications requiring high energy and moderate discharge rates, such as e-bikes, power tools, and energy storage systems.Using advanced NMC chemistry (LiNiMnCoO₂), the cell balances high energy density and safe operation, with low internal resistance and consistent performance across its rated cycle life. It supports up to 2C discharge and operates in a wide temperature range, making it reliable in varied environments. Weighing no more than 72g and sized at 21*70mm, the N21700CK-55E is compact and compatible with standard 21700 pack designs.Certified with CE, UN38.3, and MSDS, it is a trusted choice for OEMs and battery pack manufacturers worldwide.
FEATURES AT A GLANCE
N21700CK-55E
5.5Ah high capacity with 19.8Wh energy for extended runtime
3.6V nominal voltage with stable discharge curve
NMC (LiNiMnCoO₂) chemistry for high energy density and balanced performance
Supports up to 2C (10.7A) discharge current for power-demanding applications
Lightweight cylindrical design: only ≤72g, standard 21700 size (21*70mm)
Ideal for e-bikes, power tools, portable energy storage, and OEM packs
Certified with CE, UN38.3, MSDS for global compliance and transport safety
cathode
Front
four lithium-ion cells
SALES AND SERVICE NETWORK
Successful Project
E-bike /Electric power tool
Golf cart
medical treatment
SIMILAR PRODUCTS
FAQ
Q1: What certifications do you offer?
A1: We offer the following certifications: UN38.3, MSDS, RoHS , UL , BIS ,SNI
Q2: What is the typical application of this battery?
A2: This battery is widely used in e-bikes, cordless power tools, medical devices, backup battery packs, and other portable electronics.
Q3: Can I get a sample before bulk purchase?
A3: Absolutely. We support small sample orders so you can test the quality before placing a large order.
Original BAK 18650 Cells with Full Certification and Quality Check 100% Original BAK Cell UN38.3, MSDS, CE, RoHS certificates available Strict quality control before shipment
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2010
Total Annual:
5000000-10000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Henrid Technology Development Limited , established in 2010 in China. Professional Custom Lithium Battery Pack Manufacturer Based in Huizhou, Guangdong, China. We source Grade-A cells from top global cell brands and provide two cooperation options: ▪ Bulk supply of qualified bare lithium cel... Henrid Technology Development Limited , established in 2010 in China. Professional Custom Lithium Battery Pack Manufacturer Based in Huizhou, Guangdong, China. We source Grade-A cells from top global cell brands and provide two cooperation options: ▪ Bulk supply of qualified bare lithium cel...
