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Trace SW4024-Midnite Classic 150-18.6KWH Battery

Steve777

Solar Enthusiast
Joined
Oct 23, 2020
Messages
244
Getting ready to install my upgraded system, and plan to sell the old one. May be getting a bit ahead of myself here in that the old system is still in use and will probably not be removed from service for another month or so, but wanted to get some "ads" out there to gauge the interest. Here's what I got for sale:

Trace SW4024 inverter. Pure sine wave, grid sell back (UL1741 back when it was made that was enough for grid tie, it is not SA or SB), 24v nominal battery. Single phase 120v. Has optional DC wiring cover. Also have matching Trace 250A DC breaker box. This inverter has been in service since it was installed in 1999, and has been working perfectly. Have the original manual but not the shipping box.

Midnite Classic 150 MPPT is about 5 years old (it upgraded a Trace PMW controller). Has been working with ~2600W of panels which is about its limit at 24v. Again, working perfectly since install. Along with the Classic is a Midnite elec box with Midnite 60A and a 20A DC breakers (battery and PV breakers for the Classic).

Batteries are 12 2v industrial AGM lead-carbon Leoch batteries. 1384AH per battery, times 27v divide by 2 (only draw down 50%) gets you the 18.6KWHs) They are about 4 years old, I got them new to replace my failing previous battery pack. They have been kept in float virtually all this time (I have been using the batteries for backup only, not cycling them each day). The only exception was during two, two day fire evacuations and 3 or 4 short (3-5hour) grid down situations. These batteries are rated for 3000 cycles, and should have most of those cycles left. All the battery wiring and interconnect bars are included.

No PV panels are included, as I am keeping and re-using those.

This is rock solid old equipment. It has kept our freezers/fridges going thru many a power outage. Would be perfect for a remote cabin or the like where cold tolerant batteries are needed, just add panels. Do to the weight of the batteries (and inverter too), local pickup only (Denver area).

Here's a pic:
 

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