NP-L7S not charging - please help

Hi all,

I just bought three IDX NP-7LS Li-Ion NP-1 batteries and I can't
charge them on my non-IDX chargers.
Please help if you had any similar experience.

When new they came at 14.3 - 14.4 volts.
I used them down to 12.5V approx in order to fully charge them for
first time but I can't.
Battery documentation states that the discharge protection is at 9.5V
so I don't think that's the problem.
I just used them on my recorder as any of my other non-IDX batteries
down to the same point.

My other batteries and chargers are all Proctor and Bray brand, from
UK and never had a problem.

It could be that IDX batteries need a different charging sequence only
found on IDX chargers?

Any help appreciated. Thank you,

Fernando

On Jan 6, 6:14 pm, Fernando wrote:
> Hi all,
>
> I just bought three IDX NP-7LS Li-Ion NP-1 batteries and I can't
> charge them on my non-IDX chargers.
> Please help if you had any similar experience.
>
> When new they came at 14.3 - 14.4 volts.
> I used them down to 12.5V approx in order to fully charge them for
> first time but I can't.
> Battery documentation states that the discharge protection is at 9.5V
> so I don't think that's the problem.
> I just used them on my recorder as any of my other non-IDX batteries
> down to the same point.
>
> My other batteries and chargers are all Proctor and Bray brand, from
> UK and never had a problem.
>
> It could be that IDX batteries need a different charging sequence only
> found on IDX chargers?
>
> Any help appreciated. Thank you,
>
> Fernando

Are you using them on a Li-Ion Charger?