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Sorry if this has already been answered. I bought 16 of the 25 amp Navitas cells from BH a while back to build a 4s4p, 100 amp pack for a trolling motor that draws about 50 amps. I have since had a spinal operation and no longer have dependable use of my left arm. I have tried to make some bus...

Thanks, very helpful. I followed the link and learned a lot about available products. I guess I need to just test the output of my particular USB ports. If they are around 6 volts instead of 5 v. If so, I probably need to use a small buck converter between the battery pack and this particular...

I am something of a novice so can I get some advice? I built a plastic ammo box battery with 18650 cells from modems as a 4s configuration which charges to 16.8 volts. I put a small socket in the lid which has two USB charge ports and a small volt meter as well as a cigarette lighter socket and...

Hey James, are you still out there? I finally got caught up enough to get with you. Can you call me at 205-222-1297? Thanks, Pink

Thanks, I completely agree with your DIY assessment and that's where I am going. I have been building several variations of batt packs lately in order to run LED equipment, eg, light bars and spot lites for remote locations in rural areas (feral hog outposts). They run anywhere from 12v to 30v...

My 2 year old deep cycle battery needs replacing. I am going to build something around 80 to 100 amps as the house battery. Can someone recommend the best source for affordable cells to make a drop in replacement. I built one last Christmas for a trolling motor but it seems like a lot of things...

I am slammed at work right now and I live in covid19 hot zone. appreciate the gesture, though. I finish my current work obligation around 10/7/2020 and intend to pick back up on my ongoing project. I will probably come to you just to get out of here for a change. I will be in touch, Good on...

Hey James, I am in b'ham and will need a couple later this fall. Are you trying to keep these in stock? Cool idea! Pink

I see what you are saying and respect your point. I just do not care if they burn up. Either way, I am going to learn something and its going to be where it really doesn't matter. If it works like the Israeli engineers designed it to work, I will have a workable unit. if not, it is toast. I...

Thank you. ----I have a little knowledge and, as you know, that is dangerous. ---- I have some devises I ordered form "china" that are cheap "buck converters". they step-down,---- and volts and amps are adjustable, with screws. I am thinking I can get a power supply out of an old computer...

Thanks for your concern and warning. I am pretty cautious and am aware of the cobalt drawbacks. These particular packs all have a BMS built in. I have been running a tesla "S" pack in a travel trailer for over a year and it is all sunshine for me. I am not an expert but I understand their weak...

I bought some 28.8v, 7.8 ah modules from battery hookup to experiment with. (https://batteryhookup.com/products/samsung-8s) . I am likely going to connect 5 to 10 in parallel via bus bars and charge then with solar panels. but, all test at right at 32.1 volts with one a 27.9v. I want to hook up...

Are all your panels 250 watt?

Overall, this has been a very enlightening thread for me. I am relatively new to dc power, solar and lithium storage. This stuff just seems so cool and worthwhile. I really thank you guys for putting this out there so I can pick up a little bit. Pink

That tag line pretty much says it "all" for me. mooie kul!

Thanks All. I am in Birmingham, Al, right now. I am 71 YO and started my "third life" solar education in early 2019, so I want to make the cable myself for my own giggles and s****s. I am a retired studio musician, so almost everything is above my pay grade. I have some ketchin' up to do'...

Thanks for the link to JD. Very interesting guy!

I have a honda 2200 watt generator that has a DC connecter for chargind a 12volt Battery. It is a blade recepticle with the blades at 90 degrees to each other. I want to fabricate a wire incase I want to use it for charging FLA at some future time. Can anybody tell me the name of the plug I...

I see what you mean. However, I have 100 watts of collection versus 100 amps. I am mostly connected to SLA and a couple of AGMs for Honda Magnas (V65s). I am more of a hobbyist, so I go out and check on all my little experiments like a newborn baby. I am just saying that it will generally...

I set up something like this as a "lark". It was great!!! I bought a 30 amp PWM, "programmable" SCC and a HQST 100 w. 12v panel. I had a variety of SLA batteries for cars, motorcycles, etc. and I just set the SCC for SLA and connected the first one with alligator clips. It charged up by the end...

I have a travel trailer with a converter built in to the breaker panel which serves a 12v fla battery. I have installed a 24v lithium battery charged via solar panels. I have also installed a DPDT relay which switches the breaker box to shore power when plugged in and switches back to the...

Sorry to barge into a conversation,but I bought a Power Jack inverter about 9 months ago and I have not used it yet. It was about $350 for a LF PSW 5000watts with 20,000 surge. I expected it to be the equivalent of 2500 watt domestic product. I have it in a small travel trailer with 4 x 160w...

Thanks, this is gigantic for me. I took on this project knowing little more than how to change the D cells in a flashlight. That's pretty well where I am except I am pretty sure I should tighten it up a little since I am going back through from stem to stern (loosely It sort of is ...

Do you have a diagram of how you set your system up you can share? I built mine about 9 months ago and had to put it on hold at about 95% complete due to a terminally ill family member. I am about to rethink it and I want to use a BMS rather than simply relying on the charge settings and the...

I have both a 3210an and a 4215bn SCC. The BN is attached to a travel system with Tesla S battery using WP's design from last year. I want to build a small lighting config for a very remote shelter. I have LED work spotlights that run between 10v and 30v. I want to combine 18650s into a 4s...

I feel your pain. My particular pack is to be a supply for a trolling motor and I assume no seal will be perfect so it has to be resistant to intrusions but accessible for removing moisture via ventilation or just a physical clean up. If you are stationary you can make a weep hole on the floor...

Just a thought, but I have a similar aluminium case 12v pack. I saw some plastic cases at Harbor Freight for around $16 with a tray to separate the bms. Something like their ammo cases. You might be able to make a Frankenstein case that will work.

Awesome! Can't wait to see it. I've got a bunch of "Pieces -parts" I want to rig into some small projects. Mostly just to get a practical take on how these "doo-dads" work together. Ultimately, I want to augment some day to day applications in home and likely go to some type of "grid...

Thanks!!! That's a major breakthrough for me. I don't want to speak too soon, but I may be starting to put some of the pieces together. Would that concept work with a PWM SCC, also? Does it matter if the SCC is PWM or MPPT as long as I have the settings correct for the chemistry? I have a HQST...

This may seem like a dumb question, but I don't have much experience with solar power. So, please just overlook my ignorance. I am curious if I can connect an ebike charger to my Epever BN which is set for a Tesla S battery in a small travel trailer. the ebike charger is 29.4 volts at 3 amps. My...

This link should take you to all Will put out on the Tesla set up he did. https://www.mobile-solarpower.com/1212121.html Does anybody have a BMS they would recommend for Tesla. Pink

I have a couple of EPever SCCs. they are rock solid. The BN is their top of the line and all are programmable for any lithium config you need. The BN is heavy duty with heat sinks and cast aluminium case. The AN seems to be light weight by comparison, but still up to the task. if you are not...

Thanks, Pink

Thanks!! I am aware that it will be a slow burn but I can leave it connected 24/7 for a week if I need. I had a long illness in the family so the trailer has been in storage for 6 months and I am just now getting back to it. I am going to change the panels and go through the entire set up. I...

"Charge Voltage Needed That is something of a mystery to me since I am fairly new "anything that does not originate from the power company" So what Voltage is enough to get those ions moving?" Your comments were very helpful to me! Thanks. I have a question about Tesla set ups. I have a...