Lost Charge Just Sitting

[DesertRatR]

I am new to ebikes. I just bought a brand new Specialized Como 3.0 650B. It was a leftover sitting in the local bike shop, so the price was good.

I rode it a few times over a week until battery level dropped to below 20%, and then fully charged it. The iOS app indicated 100% charge. I removed the charger and let the bike sit in the garage for 2 days before riding. This morning I went for a ride and the iOS app indicated 89% charge before starting the ride. I was surprised the battery lost 11% of its charge just sitting for 2 days. Is there a problem with this battery?

 

["A"]

Drastic temperature changes in the desert?

 

[DesertRatR]

My garage thermometer showed swing from 70F to 96F.

Not concerned about garage temperature. Specialized manual states operating temperature range up to 158F (70C). Long term storage up to 95F.

I tried calling Specialized, but apparently their phone number is never answered. The local bike shop is a Specialized corporate store. I'll check with them.

 

[smutboy]

I am new to ebikes. I just bought a brand new Specialized Como 3.0 650B. It was a leftover sitting in the local bike shop, so the price was good.

I rode it a few times over a week until battery level dropped to below 20%, and then fully charged it. The iOS app indicated 100% charge. I removed the charger and let the bike sit in the garage for 2 days before riding. This morning I went for a ride and the iOS app indicated 89% charge before starting the ride. I was surprised the battery lost 11% of its charge just sitting for 2 days. Is there a problem with this battery?

What are the actual voltages when it's done charging? and then after it sits for a few hours and the charge voltage drops?

it is normal for the voltage to drop %5 or more after it sits for a few hours after coming off the charger. The BMS also consumes a tiny bit of power and im pretty sure if its whats called a smart BMS that uses Blue tooth it probably uses a tiny bit more power to run the blue tooth.