Off-the-Grid

Off-the-Grid Forum The "Dead" Battery Lamp

Off-the-Grid requires membership for participation - click to join

Actions

Forum Thread Details

Replies 25 replies
Subscribers 28 subscribers
Views 2602 views
Users 0 members are here

Related

The "Dead" Battery Lamp

scottiebabe over 1 year ago

Soft 404

Top Replies

scottiebabe over 1 year ago in reply to beacon_dave +4

Excellent reference! Karen did a wonderful job on her joule-thief circuit . I thought about mentioning it, takes for mentioning Karen's project! These modules are beginner friendly and provide a regulated…
scottiebabe over 1 year ago in reply to Jan Cumps +3

Yes, past 600 mV there isn't much left... Of course you can use a fresh cell too Some of the low cost dollar store solar lamps use tabbed ni-mh cells, I'm sure if I were to shop around I could find them…
Jan Cumps over 1 year ago in reply to scottiebabe +2

you could, but for a very short time. By the time an alkaline battery has dropped to that voltage, there's virtually no joules left.

scottiebabe over 1 year ago in reply to beacon_dave

Tinkering away on one of those!

I have thought about trying one of these:

Biolite

A small solar panel is much cheaper, but doesn't work well indoors or at night...
Cancel
Vote Up +1 Vote Down

Sign in to reply

Cancel
robogary over 1 year ago in reply to scottiebabe

I use this phone charger
Cancel
Vote Up +1 Vote Down

Sign in to reply

Cancel
scottiebabe over 1 year ago in reply to robogary

Apparently flux capacitor chargers are real!
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
cstanton over 1 year ago in reply to scottiebabe

... I've been resisting this for years. Looks like they have really expanded their range!
Cancel
Vote Up +2 Vote Down

Sign in to reply

Cancel
DAB over 1 year ago

I like it, I have dozens of half dead batteries lying around.
Cancel
Vote Up +1 Vote Down

Sign in to reply

Cancel