Following this thread with popcorn. I have a battery purchase in my near future. Took my first cruise beyond a weekend and discovered while troubleshooting why the engine wouldn't start that all my batteries are start batteries. They were installed last year prior to my purchase. Optima 34M AGMs, which the OEM confirms will not do. The frustrating thing is that the correct batteries cost essentially the same price as the wrong ones (D34M in this case). This oopsie will set me back a few boat bucks no matter which path I take (aside from only day sailing). I was thinking lithium would be the way to go, but staying with AGM seems to have advantages too. Gel sounds promising too. Lithium may be overkill for my mix of day sailing, sometimes club racing, and occasional cruising. I don't need to push any envelopes, just have enough power to spend a night on the hook and have confidence the engine will crank in the morning.
Keep the learning coming. *Richard L. Servance* C&C 34+ Blue Heaven On Wed, Sep 15, 2021 at 9:41 AM Matthew via CnC-List <[email protected]> wrote: > Thanks, Joe. I was looking at something like this for my two house > batteries. > > > > Amazon.com: Mighty Max Battery 12V 100AH Gel Battery Replaces Solar Wind > Deep Cycle VRLA 12V 24V 48V Brand Product : Health & Household > <https://www.amazon.com/gp/product/B079YL15T2/ref=ox_sc_saved_image_2?smid=A33N703ELCFX8U&psc=1> > > > > What do you think? Also, do you use the same batteries for both house and > engine starting? I know the starting battery will also need to be gel for > charging purposes, but all the gels I’ve seen appear to be deep cycle, and > not designed for engine starting. > > > > *From:* Della Barba, Joe via CnC-List <[email protected]> > *Sent:* Wednesday, September 15, 2021 12:21 PM > *To:* Stus-List <[email protected]> > *Cc:* Della Barba, Joe <[email protected]> > *Subject:* Stus-List Re: Fwd: Re: anyone gone lithium? > > > > Yes – that is what I have now. > > Gels are good batteries, but VERY hard to find. If you ask for them, most > battery shops will give you an AGM battery. Gels have close to twice the > lifespan of most AGMs. > > They never need water and can be mounted without a case. They do require a > unique charge profile and will be rapidly damaged by flooded battery > settings. > > Also keep in mind for a given size, flooded batteries, AGMs, and gels all > have about the same capacity. A 4D wet cell, AGM, or gel all come in around > 180-190 AH or so. To contrast, a 4D lithium battery that is 200 AH has air > space in the case, you can also get 300 AH lithium batteries in a 4D case. > > > > > > *Joe Della Barba* > > Coquina > > > > > > *From:* Matthew via CnC-List <[email protected]> > *Sent:* Wednesday, September 15, 2021 11:52 AM > *To:* 'Stus-List' <[email protected]> > *Cc:* Matthew <[email protected]> > *Subject:* [EXTERNAL] Stus-List Re: Fwd: Re: anyone gone lithium? > > > > While on the battery discussion, I have lead acid batteries, which have > served me fairly well in light of how I use my boat. However, I was > thinking about going to gel batteries, primarily because deep cycle gels > can provide a lot of a/h for the house. Does anyone have experience with > gel deep cycle batteries? > > > > Matt > > C&C 42 Custom > > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
