Solis FlexCore ID Accessory Kit for 5-9 Batteries

Once a Solis FlexCore-ID cluster grows past four packs it is split across two stacks, and this kit, the Column 2 accessory bag in Solis's manual, supplies what joins them: two bases, a top cover, the lower jumper cables that bridge one column to the next and the main leads back to the control box.

It is sized for five to nine 20 kWh packs, roughly 100 to 181 kWh of nominal energy. Battery packs and the high-voltage control box are separate purchases.

The Column 2 kit in figures

How the two columns are arranged

Solis's grouping drawing sets five packs out as three beside two, six as three and three, seven as four and three, eight as four and four, and nine as five beside four. In every case the control box rides on one column, and the column without it is finished with the top cover from this kit.

The datasheet lists stands of three, four or five packs. Within this kit's range, a five-pack stand appears only in the nine-pack layout, and the column carrying the control box never holds more than four.

Joining the two bases

Place the bases with a 100 mm gap between them; the manual warns that the metal fixing plates cannot be connected at any other spacing. Two base limit plates then lock the neighbouring bases together, held by the four M6 × 12 screws packed for that job, and each base sits on four of the eight levelling feet. Both bases need earthing before the packs go on.

Cables across and around the columns

The 760 mm lower communication jumper runs from COM2 on a pack in one column to COM2 on a pack in the other, and the 950 mm lower power jumper bridges the same gap from a B+ port to a B- port. Back at the control box, the 190 mm cable feeds communication from JP1 to COM1 on PACK1, the 240 mm negative lead pairs the B- terminals, and the 1000 mm positive lead returns from the B+ of the final pack in the chain. That final pack also receives the 120 Ω resistor in COM2.

Within a single column, the short pack-to-pack communication and power cables are supplied with each battery pack, not with this kit.

Nine packs: check the upper jumpers

The manual's wiring steps describe an 1100 mm upper communication cable and an 830 mm upper power cable as being for clusters of 9 to 13 packs, yet the Column 2 parts list for 5-9 packs contains only the lower pair. Anyone planning a nine-pack cluster should ask Solis whether the upper cables are needed before installation day.

In the box

Choose the right kit

Three or four packs fit in one column and take the 3-4 pack accessory kit, which has a single base and no column jumpers. From ten packs the cluster needs a third column, and the 10-13 pack accessory kit adds the extra base, a second top cover and the upper jumper pair.

Order alongside

• Solis FlexCore ID 20kWh Stackable HV Battery

  Five to nine packs fill the two columns this kit sets up. Each one adds 20.09 kWh and 64 V nominal to the series string.

• Solis Flexcore ID Battery Control Box

  Mounts on one of the two columns and terminates the main leads from this kit. Its CAN, LAN, 4G and Wi-Fi links report the cluster to the inverter and the cloud.