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2008-02-16
, 12:38
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Posts: 833 |
Thanked: 124 times |
Joined on Nov 2007
@ Based in the USA
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#12
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I too would like a better charging solution.
All the "chargers' I've found recently either use 1 AA or 4 AAA, I want one that uses 2 or 4 AAA, has a meter to tell me what it's status is, and has interchangeable tips.
Any links?
/edit - never mind, found the Tekcharge
does most of what I want.
/edit2- found it at ecost
Last edited by gemniii42; 2008-02-16 at 13:44.
All the "chargers' I've found recently either use 1 AA or 4 AAA, I want one that uses 2 or 4 AAA, has a meter to tell me what it's status is, and has interchangeable tips.
Any links?
/edit - never mind, found the Tekcharge
does most of what I want.
/edit2- found it at ecost
__________________
N810, iGo bt kb, Diablo, 10Gb storage onboard instead of a Thinkpad
OTG w/ unlimited storage!!
Put a penguin in your pocket!!
PLEASE use the Wiki
N810, iGo bt kb, Diablo, 10Gb storage onboard instead of a Thinkpad
OTG w/ unlimited storage!!
Put a penguin in your pocket!!
PLEASE use the Wiki
Last edited by gemniii42; 2008-02-16 at 13:44.
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2008-02-17
, 04:00
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Posts: 364 |
Thanked: 54 times |
Joined on Feb 2008
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#13
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Originally Posted by gemniii42
That is the MP1550 that I just ordered. I have read several posts on the sprint board over on http://www.dslreports.com/forum/sprintmb . Overall it seems to get good reviews.
I too would like a better charging solution.
All the "chargers' I've found recently either use 1 AA or 4 AAA, I want one that uses 2 or 4 AAA, has a meter to tell me what it's status is, and has interchangeable tips.
Any links?
/edit - never mind, found the Tekcharge
does most of what I want.
/edit2- found it at ecost
I can mention if you decide on a Tekkeon myPower MP3400/MP3450 make sure you get the newest revision as they had to make a hardware change because there was a very slight voltage spike on initial power up. And if were using a Cradlepoint CTR350 MBB router and the power supply the spike could kill your router. So, the good folks at Tekkeon decided to make a change to their product in order to prevent it from happening. Even though they said it was only the CTR350 that had the problem. But, ya never know...
I was on the fence for getting an MP3450 for the router as that is the more power hungry device. But went with the MP1550 instead because of the weight/portability side of things. I grabbed the 12 eneloop's and should be good for a solid 10+ hrs...probably closer to 12 hrs of moderate to heavy use.
Did you check out what they have over at http://www.batterygeek.com ? It's a good place to find ideas of what is out there in terms of portable power.
Oh, btw, I got the MP1550 on Amazon just recently for $19.99 + like $5 shipping. So with shipping it was $25. I like it because it does have a voltage regulator which for my use, the router, it really important. I am not sure how much the NIT can absorb in terms of flaky voltage. Not sure I wanna find out either.
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2008-02-17
, 23:43
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Posts: 6 |
Thanked: 0 times |
Joined on Jan 2008
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#14
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Originally Posted by Benson
Only if your laptop battery is 1.5V instead of ~12V (typical from back when they were all NiMH, not real sure what voltage they stack Li-ion cells to). I guarantee they're NOT 1.5V, though.
TANSTAAFL. Did you really think something that's smaller than your laptop battery and costs less would give better performance?
But as drizek points out, a 1.5V cell's a 1.5V cell, so substituting C or D for AA or AAA cells will work. Substitute parallel gangs for single cells if you need more...
yea, my laptop battery is 10.8 Volts, but AC adapter in is 19 Volts,
so i guess an external battery would have to be 19v??
i dont have enough knowledge to make it, just saw that NiMH D
cells get you 14.4 watt-hours per batt for ~$10 each, maybe thought it was possible to rig together 16 x D cells(1.2 volts) for 19.2 volts
and roughly 230 watt-hours for $160 + parts, compared to
what they usually charge, about $100 for an internal ~70 watt-hour
battery....im just tired of these overpriced laptop batteries when
there appears to be a far cheaper solution
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2008-02-18
, 02:01
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Posts: 293 |
Thanked: 76 times |
Joined on Jan 2008
@ Fremantle, W. Australia
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#15
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Originally Posted by jfd15
I reckon you need to weigh in the risk of blowing something up.
yea, my laptop battery is 10.8 Volts, but AC adapter in is 19 Volts,
so i guess an external battery would have to be 19v??
e.g. 10.8V is nominal. At full charge it will be 12.6V.
similarly, your 16 D-cells might be 22V at full charge, which is _probably_ OK.
thought it was possible to rig together 16 x D cells(1.2 volts) for 19.2 volts...
there appears to be a far cheaper solution
You know you could run your laptop DIRECTLY off a 12V car battery. Or use a widely-available converter to charge the laptop.
Much cheaper and more capacity than "overpriced laptop batteries".
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2008-02-18
, 02:54
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Posts: 156 |
Thanked: 44 times |
Joined on Dec 2007
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#16
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I'd recommend messing with some 18650 Li-Ion cells (I highly recommend protected ones unless you like explosions), at 3.7v 2000mah, that's equivalent to a 6000mah 1.5v cell, but smaller and lighter. Two of them, and a switchmode DC-DC converter (don't use a linear regulator) should last for a fair while.
Batteries: http://www.dealextreme.com/details.d...979~r.45363994
Chargers: http://www.dealextreme.com/details.d...151~r.45363994, http://www.dealextreme.com/details.d...105~r.45363994 or http://www.dealextreme.com/details.d...499~r.45363994
Much smaller and lighter than a D cell.
Batteries: http://www.dealextreme.com/details.d...979~r.45363994
Chargers: http://www.dealextreme.com/details.d...151~r.45363994, http://www.dealextreme.com/details.d...105~r.45363994 or http://www.dealextreme.com/details.d...499~r.45363994
Much smaller and lighter than a D cell.
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2008-02-19
, 15:45
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Posts: 293 |
Thanked: 76 times |
Joined on Jan 2008
@ Fremantle, W. Australia
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#17
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Originally Posted by t3h
For a cheap converter, get a car-charger for nokia phones.
Two of them, and a switchmode DC-DC converter (don't use a linear regulator)
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2008-02-19
, 18:53
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Posts: 6 |
Thanked: 0 times |
Joined on Jan 2008
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#18
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Originally Posted by myk
yea, i guess others on here know much more than i do on the matter...i just feel like im getting ripped off when im paying about
I reckon you need to weigh in the risk of blowing something up.
e.g. 10.8V is nominal. At full charge it will be 12.6V.
similarly, your 16 D-cells might be 22V at full charge, which is _probably_ OK.
Yuck! There are lots of reasons why everybody uses Li-Ion, even though it costs more.
You know you could run your laptop DIRECTLY off a 12V car battery. Or use a widely-available converter to charge the laptop.
Much cheaper and more capacity than "overpriced laptop batteries".
$1.50 - $2.00 per watt-hour for the standard laptop batts vs.
the NiMH batts at about 75 cents per watt-hour....i guess there
must be reasons though....
charging off a 12V car battery is not an option for me...best option i have is getting about 400-500 watt-hours of batts and recharge them every 3-4 days
no regulation needed.
I have a couple of those 7.2V nom. LiIon batteries, which do need a converter to get 5V.