I'm working on a battery-powered bit of kit for a client. His old system was powered by lead-acid batteries, and while we don't feel a need to retain continuity for continuities sake, we should think before we step away from what's been done. Does anyone happen to know what the deal is with RoHS and lead-acid batteries? Do you get a pass on that, or is there some well-structured way that you can use them in a product 'cuz they're rechargeable and therefore "green"? If lead-acid batteries are considered to be Evil by the RoHS community I guess I'll be driven to NiMH or LiPo cells -- but those each have their technical and/or regulatory problems. We need about 10kJ of energy storage (500mAh at 5V, more or less). Something that works from freezing to +55C is essential. Comments & suggestions welcome. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com
RoHS and Lead Acid batteries
Started by ●October 9, 2014
Reply by ●October 9, 20142014-10-09
On Thu, 09 Oct 2014 16:54:10 -0500, Tim Wescott <seemywebsite@myfooter.really> wrote:>I'm working on a battery-powered bit of kit for a client. His old system >was powered by lead-acid batteries, and while we don't feel a need to >retain continuity for continuities sake, we should think before we step >away from what's been done. > >Does anyone happen to know what the deal is with RoHS and lead-acid >batteries? Do you get a pass on that, or is there some well-structured >way that you can use them in a product 'cuz they're rechargeable and >therefore "green"? > >If lead-acid batteries are considered to be Evil by the RoHS community I >guess I'll be driven to NiMH or LiPo cells -- but those each have their >technical and/or regulatory problems. > >We need about 10kJ of energy storage (500mAh at 5V, more or less). >Something that works from freezing to +55C is essential. > >Comments & suggestions welcome.Some leftist will have to tell us when lead is not lead >:-} ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ●October 9, 20142014-10-09
On Thursday, October 9, 2014 10:54:10 PM UTC+1, Tim Wescott wrote:> I'm working on a battery-powered bit of kit for a client. His old system > was powered by lead-acid batteries, and while we don't feel a need to > retain continuity for continuities sake, we should think before we step > away from what's been done. > Does anyone happen to know what the deal is with RoHS and lead-acid > batteries? Do you get a pass on that, or is there some well-structured > way that you can use them in a product 'cuz they're rechargeable and > therefore "green"? > If lead-acid batteries are considered to be Evil by the RoHS community I > guess I'll be driven to NiMH or LiPo cells -- but those each have their > technical and/or regulatory problems. > We need about 10kJ of energy storage (500mAh at 5V, more or less). > Something that works from freezing to +55C is essential. > Comments & suggestions welcome.5v 0.5Ah is exceptionally small for lead acid. Why lead acid? NT
Reply by ●October 9, 20142014-10-09
Un bel giorno Tim Wescott digit�:> Does anyone happen to know what the deal is with RoHS and lead-acid > batteries?Since RoHS is a scam, lead acid batteries are not included in it. The same applies with cadmium and Ni-Cd batteries. -- Fletto i muscoli e sono nel vuoto.
Reply by ●October 9, 20142014-10-09
Den fredag den 10. oktober 2014 00.06.25 UTC+2 skrev meow...@care2.com:> On Thursday, October 9, 2014 10:54:10 PM UTC+1, Tim Wescott wrote: > > > > > I'm working on a battery-powered bit of kit for a client. His old system > > > was powered by lead-acid batteries, and while we don't feel a need to > > > retain continuity for continuities sake, we should think before we step > > > away from what's been done. > > > Does anyone happen to know what the deal is with RoHS and lead-acid > > > batteries? Do you get a pass on that, or is there some well-structured > > > way that you can use them in a product 'cuz they're rechargeable and > > > therefore "green"? > > > If lead-acid batteries are considered to be Evil by the RoHS community I > > > guess I'll be driven to NiMH or LiPo cells -- but those each have their > > > technical and/or regulatory problems. > > > We need about 10kJ of energy storage (500mAh at 5V, more or less). > > > Something that works from freezing to +55C is essential. > > > Comments & suggestions welcome. > > > > 5v 0.5Ah is exceptionally small for lead acid. Why lead acid? >yeh, a AA Duracell is roughly 10kJ anyway, afaict batteries is not covered by ROHS, the have their own "battery directive" http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:266:0001:0014:EN:PDF -Lasse
Reply by ●October 9, 20142014-10-09
On Thu, 09 Oct 2014 15:06:25 -0700, meow2222 wrote:> On Thursday, October 9, 2014 10:54:10 PM UTC+1, Tim Wescott wrote: > >> I'm working on a battery-powered bit of kit for a client. His old >> system was powered by lead-acid batteries, and while we don't feel a >> need to retain continuity for continuities sake, we should think before >> we step away from what's been done. >> Does anyone happen to know what the deal is with RoHS and lead-acid >> batteries? Do you get a pass on that, or is there some well-structured >> way that you can use them in a product 'cuz they're rechargeable and >> therefore "green"? >> If lead-acid batteries are considered to be Evil by the RoHS community >> I guess I'll be driven to NiMH or LiPo cells -- but those each have >> their technical and/or regulatory problems. >> We need about 10kJ of energy storage (500mAh at 5V, more or less). >> Something that works from freezing to +55C is essential. >> Comments & suggestions welcome. > > 5v 0.5Ah is exceptionally small for lead acid. Why lead acid?Inertia. The previous generation used sealed lead acid, therefore ... Our energy needs may go up: we haven't finished dreaming up all the bells and whistles yet, but I think we can keep the energy usage low. My personal preference would be LiPo, as long as a user can put this thing into checked baggage and fly with it, but the customer is pretty active in decisions like this, and I like to come to the table with at least all options considered. (I like this customer -- he's active about this stuff in a good sort of way, that makes me look better. He doesn't make arbitrary decisions just because that's how it was done before, or that's what's in the latest Omni. He does sometimes disagree with me, but he usually has good reasons. We pull in slightly different directions but we both believe in studying up before we jump up and down in disagreement -- and as a consequence, his product gets better.) -- Tim Wescott Wescott Design Services http://www.wescottdesign.com
Reply by ●October 9, 20142014-10-09
On Fri, 10 Oct 2014 00:15:56 +0200, dalai lamah wrote:> Un bel giorno Tim Wescott digitò: > >> Does anyone happen to know what the deal is with RoHS and lead-acid >> batteries? > > Since RoHS is a scam, lead acid batteries are not included in it. The > same applies with cadmium and Ni-Cd batteries.Cadmium?!?!?! Goodgawd. That stuff's supposed to be way worse than lead. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com
Reply by ●October 9, 20142014-10-09
On Thu, 09 Oct 2014 16:54:10 -0500, Tim Wescott <seemywebsite@myfooter.really> wrote:>I'm working on a battery-powered bit of kit for a client. His old system >was powered by lead-acid batteries, and while we don't feel a need to >retain continuity for continuities sake, we should think before we step >away from what's been done. > >Does anyone happen to know what the deal is with RoHS and lead-acid >batteries? Do you get a pass on that, or is there some well-structured >way that you can use them in a product 'cuz they're rechargeable and >therefore "green"? > >If lead-acid batteries are considered to be Evil by the RoHS community I >guess I'll be driven to NiMH or LiPo cells -- but those each have their >technical and/or regulatory problems. > >We need about 10kJ of energy storage (500mAh at 5V, more or less). >Something that works from freezing to +55C is essential. > >Comments & suggestions welcome.Here's the Europeon jiberish... <http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:266:0001:0014:EN:PDF> I assume you need a recycling, do not throw into the waste stream instructions on the battery, compartment and manual. I think thats all that is required for REACH compliance. Cheers
Reply by ●October 9, 20142014-10-09
Den fredag den 10. oktober 2014 00.34.54 UTC+2 skrev Tim Wescott:> On Thu, 09 Oct 2014 15:06:25 -0700, meow2222 wrote: > > > > > On Thursday, October 9, 2014 10:54:10 PM UTC+1, Tim Wescott wrote: > > > > > >> I'm working on a battery-powered bit of kit for a client. His old > > >> system was powered by lead-acid batteries, and while we don't feel a > > >> need to retain continuity for continuities sake, we should think before > > >> we step away from what's been done. > > >> Does anyone happen to know what the deal is with RoHS and lead-acid > > >> batteries? Do you get a pass on that, or is there some well-structured > > >> way that you can use them in a product 'cuz they're rechargeable and > > >> therefore "green"? > > >> If lead-acid batteries are considered to be Evil by the RoHS community > > >> I guess I'll be driven to NiMH or LiPo cells -- but those each have > > >> their technical and/or regulatory problems. > > >> We need about 10kJ of energy storage (500mAh at 5V, more or less). > > >> Something that works from freezing to +55C is essential. > > >> Comments & suggestions welcome. > > > > > > 5v 0.5Ah is exceptionally small for lead acid. Why lead acid? > > > > Inertia. The previous generation used sealed lead acid, therefore ... > > > > Our energy needs may go up: we haven't finished dreaming up all the bells > > and whistles yet, but I think we can keep the energy usage low. > > > > My personal preference would be LiPo, as long as a user can put this thing > > into checked baggage and fly with it, but the customer is pretty active in > > decisions like this, and I like to come to the table with at least all > > options considered. >Lipo is what is in every laptop, cellphone, tablet etc. so it shouldn't be a problem I know you won't be buying from sparkfun but, with all the bells and whistles: https://www.sparkfun.com/products/341 + https://www.sparkfun.com/products/11231 -Lasse
Reply by ●October 9, 20142014-10-09
On Thu, 09 Oct 2014 16:16:33 -0700, Lasse Langwadt Christensen wrote:> Den fredag den 10. oktober 2014 00.34.54 UTC+2 skrev Tim Wescott: >> On Thu, 09 Oct 2014 15:06:25 -0700, meow2222 wrote: >> >> >> >> > On Thursday, October 9, 2014 10:54:10 PM UTC+1, Tim Wescott wrote: >> >> >> > >> >> I'm working on a battery-powered bit of kit for a client. His old >> >> >> system was powered by lead-acid batteries, and while we don't feel a >> >> >> need to retain continuity for continuities sake, we should think >> >> before >> >> >> we step away from what's been done. >> >> >> Does anyone happen to know what the deal is with RoHS and lead-acid >> >> >> batteries? Do you get a pass on that, or is there some >> >> well-structured >> >> >> way that you can use them in a product 'cuz they're rechargeable and >> >> >> therefore "green"? >> >> >> If lead-acid batteries are considered to be Evil by the RoHS >> >> community >> >> >> I guess I'll be driven to NiMH or LiPo cells -- but those each have >> >> >> their technical and/or regulatory problems. >> >> >> We need about 10kJ of energy storage (500mAh at 5V, more or less). >> >> >> Something that works from freezing to +55C is essential. >> >> >> Comments & suggestions welcome. >> >> >> > >> > 5v 0.5Ah is exceptionally small for lead acid. Why lead acid? >> >> >> >> Inertia. The previous generation used sealed lead acid, therefore ... >> >> >> >> Our energy needs may go up: we haven't finished dreaming up all the >> bells >> >> and whistles yet, but I think we can keep the energy usage low. >> >> >> >> My personal preference would be LiPo, as long as a user can put this >> thing >> >> into checked baggage and fly with it, but the customer is pretty active >> in >> >> decisions like this, and I like to come to the table with at least all >> >> options considered. >> >> > Lipo is what is in every laptop, cellphone, tablet etc. so it shouldn't > be a problem > > I know you won't be buying from sparkfun but, with all the bells and > whistles: > > https://www.sparkfun.com/products/341 + > https://www.sparkfun.com/products/11231 > > -LasseI wouldn't build Sparkfun stuff into a product, but I've got some of their tools on my bench, and their USB to TTL-level serial devices are nifty. And I often look at what they're doing for inspiration. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com
