Detailed Parameters of High Drain US18650VCT5 2600mAh 30A 12C Discharge Rate Flat Top 18650 Battery Replacement for Sony VTC5

Note: The Sony VTC5 (official model number Sony US18650VTC5) is a 2600mAh cell 20A high drain 18650 battery, with a unique specification that sometimes allows usage to 30A.  Sometimes it"s labeled as the Sony VCT5 (or US18650VCT5).   Some refer to it as a Konion cell.  It has a great reputation particularly among hobbyists who need high mAh and high drain capabilities like e-bike builders, vaping users, and high powered light customers.

Battery specifications:

• Model: US18650VTC5
• Manufacturer: Sony
• Chemistry: NMC
• Max. continuous discharge current: 20A
• Nominal capacity: 2500 mAh
• Nominal voltage: 3.6 V
• Discharge end voltage: 2.5 V
• Charging voltage: 4.20 +/- 0.05 V
• Standard charging current: 1.25 A
• Length: 65.20 mm
• Diameter: 18.35 mm
• Weight: 44.30 g

Comments

• At 10A the VTC5 reached 2375mAh. This is good performance.
• Maximum temperature reached 82°C at 20A. This is a bit hotter than the Samsung 25R but the same as the 30Q and HG2.
• Five additional cycles at 20A showed essentially no loss in capacity or additional voltage sag.
• A 10A discharge done after this actually showed an increase in voltage! Only averaging about 0.050V, but it"s there. The cell was cycled three times at 5A before these tests started. This is the first cell I have seen that actually does need a few cycles at moderate current levels before reaching its full potential.
• There was no increase in voltage for a quick retest at 15A. 
• Temperature rose to 96°C at 25A. That"s way too hot for decent cycle life and significantly increases the chances of the cell venting. This is a 20A cell. Do not run it above 20A.
• While operating any cell near its rated maximum current causes some damage to the cell.

Detailed Image of High Drain US18650VCT5 2600mAh 30A 12C Discharge Rate Flat Top 18650 Battery Replacement for Sony VTC5

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1. What is an 18650 battery?

The 18650 battery is a lithium-ion cell classified by its 18mm x 65mm size, which is slightly larger than a AA battery. They’re often used in flashlights, laptops, and high-drain devices due to their superior capacity and discharge rates. 18650s come in both flat and button top styles, and usually boast 300-500 charge cycles.

2. How long does an 18650 battery last?

Most 18650 batteries will last between 300 and 500 charge cycles, but battery lifetime can be extended far beyond those numbers if charged regularly before complete discharge. All batteries degrade over time, but you’ll often get over a year or two of life from an 18650 depending on your use.

3. What is the best 18650 battery?

The best 18650 battery depends on the needs of the device you use it in. You should choose an 18650 that is slightly above your device"s minimum discharge requirement, and then focus on charge capacity. 

4. What are unprotected 18650s, and are they safe?

Most batteries include protection circuit boards (PCBs) to monitor a battery’s discharge rate and internal temperature. Unprotected cells are often used by experienced users who build battery packs or use 18650s for electronic cigarette and vaping purposes, which often need higher discharge rates than protection circuits allow.

5. Why choose lithium over alkaline chemistry?

Lithium batteries are a great option for today"s high-end electronics as these cells typically have higher capacities than their alkaline counterparts. Although rechargeable batteries tend to cost a little more than standard alkaline batteries up front, these costs have reigned in because you won"t need to replace rechargeable batteries nearly as often as alkaline cells.

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