SKU: 98813005362

ECP+ Extreme Graphene+ 8000mah 14.8 (4s2p)

Sale price$80.95 Regular price$89.95
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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

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Description

ECP+ Extreme Graphene+ 8000mah 14.8 (4s2p)Welcome to O. P. S Each O. P. S pack is tested prior to shipping out to make sure it is free of manufacturing defects. Includes cell matching and IR test. ECP+ Hardcase 8000mah 4S2p Extreme Graphene+ engineered for balance and power. using LCO as a baseline in our lithium batteries. This is from our new and latest factory. Increased constant amps and voltage state. we use a 300,600amp and a true C rate load tester on all our lithium batteries.

Welcome to O.P.S

Each O.P.S pack is tested prior to shipping out to make sure it is free of manufacturing defects. Includes cell matching and IR test. 

ECP+ Hardcase 8000mah 4S2p Extreme Graphene+ engineered for balance and power.  using LCO as a baseline in our lithium batteries. This is from our new and latest factory. Increased constant amps and voltage state. we use a 300,600amp and a true C rate load tester on all our-lithium batteries. Finally, Road tested.                 O.P.S is pushing the limits of today's materials, so welcome ECP to the team.

- Updated our tab cells for lower internal resistance.                                                    - Hardcase for protection as well as Performance
- 10awg wire from our tabs to your desired connector.                                                                                

   Specification details are below.

    Size:  44mm x 46mm x 138mm 

   Measured MAh:         8000mAh

   Voltage:                           14.8V

   C rate:                             150+

  Weight:                             675gr     

  Wire size:                         10AWG

 

Finally, if you want your batteries to have a good life cycle think about your charging system and your monthly process. Need any support with this, please contact me via Facebook or email.

Advised to charge rate of 1C to 5C please note that a higher charge rate will put less mAh into the pack and will reduce cycle life.

Please note there is racing chemistry in our cells so we do not recommend dropping voltage below 3.3 as underload drop below 3v. Can reduce your performance will void your 6-month warranty.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98813005362

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4.4 ★★★★★
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Doc
Bozeman, US
★★★★★ 5
Great price great shoe
Size: 12, Color: Burgundy Polished Full Grain
Excellent shoe. Tried the Sebago penny loafer and the sizing was ridiculous. These J and M are sized perfectly. I’ve had them before and they wear like iron. Very comfortable right out of the box.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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Verified Purchase
roger mendes
Phoenix, US
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
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Reviewed in the United States on March 21, 2026
F
Verified Purchase
Fabric Crazy
Massapequa, US
★★★★★ 5
Really nice shoes
Size: 9, Color: Black Polished Full Grain
My husband enjoys wearing these shoes. Very classy looking. They fit well. They arrived quickly. He liked them so much he ordered another pair in a different color which have worked out just as well.
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Reviewed in the United States on February 3, 2026
T
Verified Purchase
the agitator
Boise, US
★★★★★ 4
Penny Loafer
Size: 11 Wide, Color: Burgundy Polished Full Grain
I am ending them bak and will order the sae shoe at size 10 1/2. Most shos I fit are 11 however these were too large. They are a beautiful shoe! I will ofder a 10 1/2
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Reviewed in the United States on January 13, 2025
H
Verified Purchase
Hugh62
Lowell, US
★★★★★ 1
Poor quality control - maybe outlet store leftovers
Size: 11.5, Color: Burgundy Polished Full Grain
The two shoes were not the same size. They were both labeled 11 1/2 but one shoe was larger than the other and the fit was poor. I returned the first pair and ordered a replacement. This time the shoes were close to the same size but too loose and the left one has sewing issues. I've bought Johnston & Murphy for years because of the quality. These were to replace an existing pair of burgundy penny loafers that have finally worn out (even after several heal/sole replacements). That is the expected quality. I suspect Nashville Shoe Warehouse may be handling shoes that didn't measure up for the quality; more like an outlet mall than getting the J&M quality I've come to expect. Update: went to Johnston & Murphy site to buy "direct" from the manufacturer. There were several recent reviews where the shoes were long and didn't fit properly. Genesco - please step up the manufacture / crafting of these classic shoes to the level of quality they used to have.
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Reviewed in the United States on July 21, 2025

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