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It is much more complicated than hey "lithium is the way to go" These comments from sponsored Tubers with drop in Lithium batteries with an internal BMS are a receipt for problems.
#1 Never “Drop In”
If you have not already bought “drop in” lithium batteries, don’t. The problem with “drop in” batteries is that, since the BMS is inside the battery, it has no way to communicate its intentions before load dumping.
#2 Action Must Be Automatic
Typically, the time between BMS warnings and load dump is short. For example, Al, chief designer at Wakespeed, is a happy camper if the BMS gives his software two seconds to do the right thing. So, clearly, we want to build a system around a smart BMS and charging gear that it can automatically shut down safely and quickly, before the lights go out.
#3 External BMS
At least at the moment, and probably in the future, the BMS needs to be external to do this right. The other benefits of an external BMS are that it is generally more robust, smarter, and can be replaced if it fails, without replacing the whole battery.
#4 Two Busses
An external BMS that can send a signal, typically to a relay (solenoid, contactor), is not going to help us much if said relay disconnects the battery from the loads, even when it doesn’t need to. So it’s a fundamentally good practice when designing a lithium battery system to separate the charge and load busses with a BMS-controlled relay on each one. That way, in an overcharge scenario (likely more common than undercharge), the BMS can just disconnect all the charging sources but leave those vital loads supplied—fewer lights-out-related disasters.
#5 Smart BMS
Of course, this means we need a BMS that’s smart enough to decide whether or not it needs to disconnect everything, or just the charging sources. Many (most?) are not that smart, so shop wisely.
#6 Fit a Real Smart Regulator
Moving on from a smart BMS, we should also install a really smart alternator regulator.
#7 Amp Counter Backup
The above recommendations only help us if the problem that caused the BMS to throw a wobbler only required disconnection of the charging sources. But what if something goes wrong, or we just don’t notice that the battery is dropping toward that state of charge (typically 20% I like you have advocated in your vlog) where the BMS will disconnect the load buss? The problem here is that one of the great advantages of lithium over lead, the ability to maintain more constant voltage over the entire usable range of charge state, becomes a liability. With lead acid batteries we can simply set a low-voltage alarm that will warn us that our bank is getting low, way before any vital gear shuts down.
# 8 Buy From a Cruiser
The above tips provide us with a broad-brush check list of capabilities to look for when shopping for lithium batteries and the supporting gear. I strongly endorse Ocean Planet Energy as a source. Bruce is a two-time singlehanded circumnavigator, and Nigel Calder as a partner.
Always like your honesty and humour. Beautiful family. Thanks for sharing your life with us. 👍 ✌
Getting ready to sell?
I have lived on my sailboat for 25 years. I'll never understand why the young generation of sailors outfit their boats the same way they outfit their homes on land. A sailing boat is not a villa. Nobody needs all that stuff. Living on a boat means to keep the sea clean and not destroying it. Sustainable living is the most important thing we have to practice on our Sailing boat and planet. I generate all my energy with photovoltaics, wind and hydropower. I don't need more than 150 liters of diesel per year. Nobody needs a generator, nobody needs a watermaker that produces 200 liters of water per hour and nobody needs all that technical nonsens. I am very disappointed to see this young generation of sailors consuming stuff like there is no tomorrow on this planet
Lady, you have a good husband. He has common sense, is logical, rational, in touch with reality, and doesn't chase fads like most do. He is a keeper.
Love these shows where you show what works best for you ! Thank you !
If you bought a new boat what would be your favorite model? And why!
This was uplifting!!!!!!!!!!!
You're my very first youtube sailing channel. Been watching since San Blas (I think, it's been awhile anyway). I think you're both awesome sailors, storytellers, and parents. So please take this the right way. Please, please, please, please, please wear the kill switch strap when you're in the dinghy. It's so simple to do. I was once involved (as a witness) in a court case where someone died because they weren't wearing it. I just cringe when I see you driving the kids around, filming with one hand, steering with the other, and even saying the 30hp scares you. Keep up the smiles, you two are great, can't wait to see you continue and watch the kids grow. Thanks.
Can't wait to see the second half of the voyage and what the future holds in store. I use to sail with a friend of mine in my younger days (27 foot Newport) so watching your adventures bring back memories although yours are on a larger scale. Mine was just sailing the Chesapeake Bay but it was a blast. Many long weekends on the water. Good and safe sailing to you both and your children and I'll be along in spirit.
Wait a second, you need to be able to read a manual? I’m out. 😂😂😂
Nice way to mix it up! Wondering where I can get one of those lithium bread makers 😂, good catch Ben.
You guys are an amazing family on your way around the world with the best outlook possible. If someone told me I could have raised my family on the open ocean I would have said they were crazy. Thanks for sharing your adventures the good and not so good.
Thankyou .
Great job of sharing the things that you like.
…. but it is the norm, we don't notice how well something works till it does not do what it is supposed to … that also goes for our bodies, run it into the ground and then wonder why we are sick, ….. you are only aware of being sick when your body can not keep it masked any longer …… another thing lots of people are oblivious of is the beauty of mum nature …. thx for the heart felt share guys … as always .. never stop dreaming, just dream bigger … have fun be safe, save our oceans …..
Hi Guys, thanks for the video! You guys and the little are ones all looking good, well except for Bens finger nail. So Ben, let's quickly review safety and acceptable practices when deciding to hit something with a steel hammer. Umm, well never mind.
What brand water maker do you have? We need to add one to our Endeavour 42.
Went to the big boat show in Toronto once that was pretty cool. Years ago 86/7, didn't know much about boats then. Was thinking of building a twin hull type boat for motoring the lake . Maybe one day! Hey your mechanic gloves matched your undies! Lol hey at least your not moping about your cracked hull .
Compared to your tap water at "home" in Canada, how does the water on board taste?
Great episode folks. Enjoyed it.
Thanks for sharing.
Life is good ~
… Congratulations 👏🎉🎈 Guys for a job well done… watching here from the Philippines
rock stars…. the best. Stay safe. Stay happy. Love the Vibe
⛵🌏🦈🤿🐟🥽🐋🌴🩳👙⛱🩴🐚🐠🎣📸☀️🇦🇺
Fully agree with your watermaker selection. We have the same with a CAT 247 pump run from a generator with a 2hp motor, three membranes so we can make 200 litres per hour. 15 to 20 mins run time per day. No electronics. I am the control system
Willa & Bodhi have gone right as well, props to their manufacturer 🤣
Great episode 👍🏼
❤ Your kids are adorable in one bucket! 😂. Awesome
I like this one as I use to do so much of the hands on stuff!! Time to upgrade the solar to 500+ ea
That outboard is a beast. My buddy in phuket bought youre old dingy. The outboard is still sweet. A bit hard to start but runs so smooth. I personally like the suzuki 4strokes
great show.
thnx guys!
What is the water maker brand?
Your senses of humor make this channel. Just love it, thank you!
Hey question hopefully you will see this and respond, do y’all keep up with with your children's shots? As in is there more of a risk of them getting sick while traveling? Very curious to how some people handle/ trust other countries medicines. I am not wanting my daughter to get these shots just because I have a strong belief that the human body can defend itself! Please I need some other peoples opinions and not anyone who is close minded and scared. Thanks! Ps- I live in Florida but I am planning on traveling around and living the cruising lifestyle
That white magnificent water maker is a positive displacement pump that yes pushes the water through the membranes which does the actual produces drinkable water. What you call a water maker is only a component of the water maker system.
Love the videos though. Sorry just an OCD engineer.
Maybe look at getting the cone clutch upgrade from Gideon in the US, worked for us, shouldn't have to lap them every 200+ hrs. Enjoyable video…thanks
BEN & ASH; What a NOVEL and WONDERFUL idea; A video about "POSITIVITY"! This is where your FAMILY EXCELS ! I am wondering what your "CALENDAR" looks like, are the repairs completed, How's your "Weather Window", do you have a departure date yet ??? Are there any boats that will be departing about the same time for destinations the same as yours? Do you have a "HF" "Ham" radio ? Thanks for this video you guys … … It means a LOT !
Great content as always , I would love to know why the clutch slips and needs re-bedding , there is much to dislike with my volvo penta on the cooling side but thus far no problems with the sail drive. I enjoy the fixing videos just as much as the travel log elements. safe sailing.
best sailing channel of its type!! following you since 40k and still love u two or 4 right now!!!
Terrific enjoyable video, so chill. It's great to see some of those special comments on fine product choices you've made.
WHY dedent you gett the right boat the FIRST TIME???? Why???????? Why????………….
The next boat??????
Awesome as ever! You both look so very happy too. Glad for you.
Next boat idea. Buy a Seawind in Australia and start from there.
can i join you guys for few weeks? 😀
Hey Nahoa Fam,
I absolutely love your videos. <3
I hear you coming to Cape Town, South Africa.
Please let me know when you guys are here as I would love to meet you and share stories with you, as well as introduce you to our culture, food and attractions.
I will be looking out with excitement for your arrival. ^^