Recent content by orangeminnie

We have done several charge/discharge cycle tests with the BB10012 batteries at various temperatures. At 10c, they appear to lose at least 5% of rated capacity, when compared to 25C (77F) temperature. At 0c, published charts (not from BB) show a 10-18% reduction for Li, with a steeper drop in...

There's a guy who has a large lead bank in parallel with a smaller lithium bank, full time, on a boat, and swears that it works just fine. I'm looking for the link. He uses a lithium charge profile. The lithium batteries handle the high-current loads and top-charge loads, while the lead...

Any top balancing, once in a while?

For Li, has anyone tried programming in a lower absorption voltage (e.g.: 13.8V), and then used the equalization function to absorb at a higher voltage (e.g.: 14.4V) at pre-programmed intervals (e.g.: once a week)?

SolarTech sells 100w 24V panels https://www.toboaenergy.com/product/solartech-power-spm100p-wp-n-solar-panel-100-watt-24v/?_vsrefdom=adwords&gclid=Cj0KCQjwutaCBhDfARIsAJHWnHvUdhadFZ0aJB2qGQd423J9NJ5Z36urta8vYGObUkVbeKtstgBFHe4aAp_VEALw_wcB Newpowa sells 24V 120W and 200W panels.

Are the Lynx busbars plated copper, aluminum, or something else?

I think that Battleborn considers companies like Relion and Victron to be their competition.

If the battery has a BMS, it would disconnect before destroying the battery. Also, the brakes only pull a few amps - much less than I would have guessed. If a trailer gets loose, there are many other things that could break that would be more concerning.

Why not use aluminum that is as wide as the battery is tall?

For 90dg C insulation, I'm seeing maximum 130A for #2 wire. For 60dg C insulation, it's only 90A. The attached charts may be conservative, but they have served me well, as a guide.

I agree, except for special cases like this: Consider a 2000W inverter. The maximum continuous amps might be 190A, but the recommended fuse might be 250A. The run is short, so voltage drop is not an issue. How do you size the wire? My point is that in limited cases like this where there is...

The most important thing is to size the wiring to the fuse you intend to use. For 2000W, something around a 250A fuse is usually recommend, at which point most charts recommend 4/0, even for a short run.

Relion is maybe the only one to do it right, for an internal heater that is internally controlled. Below 0dgC, all incoming charging current is diverted to an internal heater. When the battery is sufficiently warmed, the charging can begin. No battery power is ever used to run the heaters...

Alternator ratings are only valid at ideal conditions: sufficient RPMs and cool temps. A 65A alternator is too small for a 30A DC-DC. Victron makes an 18A. Speaking only for myself: I would want an alternator with a rating 3x to 4x the input current of the DC-DC. Our stock alternator is rated...