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Li-Ion 18650 Battery: 7.3V 5.2Ah (38Wh, 9A rate, 2x2SQ, INR18650M26)

Your Price: $52.50
In Stock

Product ID # 2456
Part Number:

Lead Time: 5 Business Days!

Quantity Discounts

25 to 49$49.87
50 to 99$48.82
100 to 500$47.25
*Important Shipping Regulation This pack is for testing (prototype) only. It has not been UN38.3 tested yet.  Read more...
Battery Made of 4 pcs INR18650M26 cells, packed in 2S2P 
Voltage Nominal Voltage: 7.3V; Charge Cut off: 8.4V; Discharge Cut off: 5.5V
Capacity 5200 mAh
  • 1x PCB (10A limit)  installed on the  battery pack and protects the battery from
    • Overcharge  / Over discharge  / Over drain / Short circuits
  • 1x 9 Amp polyswitc
Pre-wired 6" wire with 18 AWG
Max. Charging Rate 2 A
Max. Discharging Rate 9 Amp limited by polyswitch 
Weight 7.0 oz (198 g)
Related Product
  • Lithium battery may be exploded if not using properly. Please refer above specification. We are not responsible for any damages or losses caused by misusing, which include but not limit to:  over charge, over discharge, over current, any changes of this battery pack, disassemble battery pack) .
  • Always charge battery with attention.  Battery pack shall be placed in a fire-proof container during charge to avoid any accident
  • Please check battery polarity before connect battery with device. Never make wrong polarity connection.
  • For safety warning please see the link here
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warnings

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Product Reviews

(1 Rating, 1 Review) Average Rating:
7.4v li-ion pack
(Unknown) 2/18/2009 10:53 AM
This battery pack is great and powerful. It has 4000mah capacity. The light I built uses CREE XP-E R2 which draws about 1000ma (it puts out about 200 lumens), so with this battery I can ride mountain bike at night for about 4 hours, although I usually only ride 2 hours a week. The extra capacity is nice so if I forgot to charge it after one use I still have enough juice for one more use. I'm thinking about using this battery pack to hook up to two lights, in which case it would provide enough juice for two hours. However, I am thinking about building lights with the dimming feature so I can use the low setting while climbing up the mountain to save energy and turn it on full blast when going back downhill. I estimate that this type of set up would give me about 4 hours of use with this battery, The battery is quite light in weight, or at least light enough that it can be mounted on the back of my bicycle helmet without it feeling awkward. The 18 AWG wire that came with it was more that adequate for my application and 6" wire provided enough length for connection between the battery and the light on the helmet as well as when mounted on the handle bar. I only bought one so now I need another one to mount on my handle bar for the bar LED lights, which will probably happen soon.
What to consider when designing Lithium Batteries?
Bluetooth Technology for Lithium-ion/LiFePO4 Batteries
UN 38.3 Safety Test

We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
Lithium Battery Shipping Regulation
Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
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