The current edition of Sail has an Calder article. Joel
On Wed, Oct 17, 2018 at 11:00 AM Rick Brass via CnC-List < [email protected]> wrote: > Note the publication date of the Boat US article is early 2012. > > > > Lithium battery technology is evolving pretty rapidly. The current battery > tech has greatly reduced the probability of fires and explosions, but the > chemistry gets really complex. Leading edge tech is a solid lithium foil > that you can actually cut in half (or puncture) with no adverse impacts > except a loss of storage capacity; unfortunately that is pretty much being > used for phone and portable device batteries and not up scaled to batteries > we can use in our boats…yet. > > > > The process of switching to Lithium batteries should start with research > to understand the different chemistries, and talk to the battery source to > find out what technology they use. > > > > Rick Brass > > Washington, NC > > > > > > > > *From:* CnC-List [mailto:[email protected]] *On Behalf Of *Jerome > Tauber via CnC-List > *Sent:* Wednesday, October 17, 2018 8:28 AM > *To:* [email protected] > *Cc:* Jerome Tauber <[email protected]> > *Subject:* Re: Stus-List AGM Batteries > > > > https://www.boatus.com/seaworthy/magazine/2012/january/hazards.asp > > > > Emergent Technologies, Evolving Hazards > > *New lithium-ion batteries pack a lot of energy. Here's why that could be > a problem on boats.* > > Sent from my iPhone > > > On Oct 17, 2018, at 8:12 AM, Della Barba, Joe via CnC-List < > [email protected]> wrote: > > Some battery facts: > > 1. Flooded lead acid, AGM, gel, and lithium batteries all have > different charge voltages and resting voltages. > > 2. If you connect different types together, one of those types won’t > be charged optimally. > > 3. If you connect different types together, the one with the higher > resting voltage will discharge into the one with the lower resting voltage. > > 4. Lithium batteries are the best in every way but price. They need > a specialized charging and management system as well that isn’t cheap. > > 5. Gel batteries last longer than AGMs, but they are not as easy to > find and are quickly killed by overcharging. > > 6. AGM batteries are easier to get and are quickly killed by > undercharging. > > 7. The cheapest way to get deep cycle batteries – by far – is to buy > golf cart batteries. > > 8. East-Penn Deka makes gel and AGM batteries for West Marine. They > also make GRP 31 AGMs with a private label for Sam’s Club that are the > exact same battery for half the price. > > 9. Adding more batteries and doing nothing else only helps for a > weekend. Once you are out long enough to run them down, you need a way to > charge them faster than the stock system or you just trade frequent engine > use in for less frequent but longer engine use. > > 10. Solar + LEDs helps **a ton**! > > Joe > > Coquina > > C&C 35 MK I > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Joel 301 541 8551
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
