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One of the original cable terminals on my golf cart corroded and I don’t have crimpers for heavy cables. I wanted to use the cart for the weekend, so figured I’d just buy a premade cable from my local auto supply. They have to handle lots of amps when starting an engine, right? Worked for about...

Purchased a barely-used SOK 5.1kwh battery from a member of this forum for my Yamaha AC-drive golf cart. After removing the FLA batteries [toughest part of the swap due to corroded bolts] and removing a couple of brackets there was the perfect space for the server rack case. Made some temporary...

I tested and votes will be kept anonymous. I have no other agenda for the poll.

Sometimes my day job has a crossover with my hobby. I have an active project to bulk convey 4680 cells so they can be recycled. What reuse value are the old 4680 cells? I may need to “sample” around 10kwh of cells for “conveying testing”. Appears each cell is 100wh before degradation.

About to pull the trigger on six 2kwh Samsung 8S modules for my 48V solar golf cart. Are 3.7V lithium NMC prismatic cells originally for a UPS. Will run two modules in series for 16S, then three pairs in parallel. Looks like they will comfortably fit under the seat. Question #1: need to...

I don’t know if this is funny or sadistic.

Does anyone have experience with Reliance XCell Lithium? I have the ability to purchase a used one locally at a decent price. Primary usage for powering my golf cart, secondary usage for backup power with my 48V inverter. Specs seem good if they are accurate. https://reliance-lithium.com/

Grab a screen capture unless you really want to advertise your address. Townhouse is temporary so have not installed solar on the roof. Plus the roof faces southeast so is not positioned optimal. However the golf cart is easily positionable into the sun.

Was cleaning out my dads old stuff and found a 1917 book from my grandfather “Hawkins Electrical Guide #1“. Actually looks useful as it uses language that is understandable by the non-electrical engineer (me). There is even a Wikipedia page dedicated to the book. Go ahead and ask me anything, I...

The last couple of weeks my UPS was in “AVR Trim” indicating high utility voltage. Yesterday the fan was running while on grid, assume because the massive transformer was warm. Today I finally measured with my non-RMS meter and it indicated 128V and would jump around +/- 0.5 volts. I never...

I would have posted in the “Humor Section” however there is nothing funny about the video.

I’m not sure if the male indicator light is necessary. Switch position is obvious.

ARC Microturbine Generator. Earplugs not included. https://fusionflight.com/arc/

This topic should go under Renewable Energy Sources however its neither hydroelectric nor wind. The system operates from the charge in rain droplets, not the mechanical energy of them falling. Mentioned 50 watts/M2. or about a third the output of a solar panel. Also looks easy to DIY. Could...

What a deal if you need 3-phase power (not my listing) https://houston.craigslist.org/ele/d/houston-apc-smart-ups-vt-series-15kva/7356165044.html

The crowd was shouting at the gator to stop?!?

A fancy neighborhood near me has a promotion, any new home sold in June received a free “Bronco Power Boost” generator with a retail value of $5,900. Googled it and found they will not list the inverter output watts or KWH of storage. Very deceptive at best. Backup power is quickly becoming the...

Getting ready because ERCOT keeps threatening rolling blackouts for this summer. My inverter powers from my used 48V golf cart that came with good Trojan FLA batteries and Delta-Q 18A charger. My 400W solar panels with MakeSkyBlue MPPT easily charge for my driving needs. However between rolling...

Looking to purchase a set of Lishen 272ah cells for my 48V golf cart. Will require a 16S BMS rated 50A continuous when on the inverter, however can handle 150A for 10 seconds when accelerating or climbing hills. Charging is only 8A max. Bluetooth connectivity would be really cool but not...

Grandma got spooked from the Texas cold and blackouts and wants a generator to run her furnace. Must operate autonomous which pretty much must be a whole house unit with auto transfer switch. Might as well do it right and size to run the AC unit during summer hurricanes. Please confirm my...

Diverted from the This guy thinks outside the box adding lead to a LiFePO bank thread I was very surprised to hear this as virtually all UPSs have AGM batteries, and are located inside homes & offices. I have three AGMs under my desk right now. My favorite Harbor Freight sealed battery also...

Thought was interesting that its intended for lead batteries. Not sure if there is anything desirable on the system. Click the link

Received as a Christmas gift a QVC Special Halo Power Bank 15000. Includes a UL Lithium-ion polymer battery claiming 15AH capacity. Since my office is already converted to 12V battery backup with USB ports I have no need at home to charge my phone during grid-down. There are multiple USB ports...

Today was a rare Texas cold morning in the mid-40sF. Full sun and a decent breeze to chill my golf panels. In the usual Texas heat I never saw more than 300-320 watts.

Interesting video

I am installing a small UPS to run my Moms TV and satellite dish during short-term grid down. Measured around a 100W draw. The backup system needs to be granny-proof autonomous so purchased a APS sine wave BR1000MS. Cost was $160 including tax & shipping. The UPS is supplied with an internal...

I am installing a UPS to run my Moms TV and satellite dish during short-term grid down. Measured around a 100W draw. The backup system needs to be granny-proof autonomous so have already purchased a APS sine wave BR1000MS. Cost $160 with tax & shipping and should receive next week. The UPS is...

Yamaha 48V electric golf cart? Solar panels? MakeSkyBlue SCC? I sense a copycat.

Interesting concept: https://techcrunch.com/2020/01/28/with-tony-fadells-help-advano-is-building-battery-components-to-power-an-electric-future/

Anybody heard of these guys: https://www.advano.io/ I have a project working with them and am looking for background information.

If anyone is interested for experiments I will donate my badboy APC 3000XL rated for continuous operation. I tested the UPSverter while using the solar panels and whenever the battery climbed above 53V the UPS started blinking indicating higher than expected battery voltage. Later it would...