COMMUNITY FORUM

jescott42

12:34PM | 01/31/07
Member Since: 01/30/07
2 lifetime posts
Bvtools
I have several old power tool batteries that have died over the years... I really don't like buying them over and over.

I got the bright idea (oh no), if I could find an ac adapter with the same volt and amp output, and I could fit it inside a battery case (take the batteries out of the housing), then I wouldn't need more than one or two batteries while I'm away from an outlet. (Most of what I do, I do close to an outlet. Having cordless tools are just very nice at times.)

Anyway, I found an adapter with the specs I needed.Got it home and checked it out on my meter (right on the money for volts; less than 1/2 amp higher than the batteries).

I emptied out a worthless battery, fit the adapter in, carved a hole for the cord and fit the wires inside to connect to the "battery" terminals.

PRESTO! Now it looks just like a regular battery, tests the same, it just has a cord hanging out.

When I put it in any of my tools, however, the tool runs in VERY short bursts and won't come up to speed.

What did I do wrong? If I use a variable speed tool and squeeze the trigger slowly, it sounds like it works great!

However, it is only acting! ;-)

Indeed, I can stop the drill with little effort with one hand and the sawzall will stop as soon as the blade touches wood.
1827-replace_a_battery_wi

Billhart

03:27PM | 01/31/07
Member Since: 04/25/05
1916 lifetime posts
You can get batteries rebuilt for about 50-70% of new.

Do a google on it and you will find several sources.

There are several problems with what you want to do. The first one is weight and balance of the tool.

But how did you find out the current that the tools use when loaded? Batteries can produce a relatively high current surge.

Many of the smaller adapters only put out a small amount of current. The bigger ones can, but the design is such that they often need a minimum amount of load to work correctly.

And they often have too much ripple that can confuse variable speed controls.

jescott42

03:43PM | 01/31/07
Member Since: 01/30/07
2 lifetime posts
That may be the problem; I don't know what the load draw is, only what the batteries are rated for. The only extra info I had was after-the-fact. The lumens of the flashlight only went up by 2% (possibly is how much more the old batteries could be charged?). But, we all know flashlight bulbs don't exactly draw much amperage ;-)

I wonder if I should go with a higher amp rated supply. Most things I've read say keep the volts as close as possible (exact is best), but that the amps don't matter.

I've even hear that for laptop batteries.

I wonder if that's true.....

In any event, would even an too low amp rating explain the was they run? The brief spurts of running, I mean? Or is that what you meant by 'ripple'?

BTW. The only 'local' places that will/can rebuilt are:

1) too damn high in price.

2) too far away (unrealistic to drive).

3) have multiple BBB marks against them.

Not all are every one, but you get the idea.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

Carefully using a ladder or binoculars, check the roof for any raised shingles. If there are any signs of damage or wear, ... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp1