- Joined
- Jan 6, 2010
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I got the O2 from JDSLabs with inbuilt battery. This battery seems to be the most inefficient cell ever made
I charge it for like 6hrs and it lasts may be an hour, with my easy-to-drive Grados.
Is this an issue?
Please check the instructions guide: charge for at least 20 hours!
The Tenergy 9Vs are one of the top rated cells on the market. Just make sure to charge as instructed.