Pytes V5

It is a battery for the home that solves a problem specific to winter: lithium batteries cannot be charged at sub-zero temperatures, and this model has an integrated heating element, which raises the temperature of the cells by itself before charging. Otherwise it does what any solar battery does: it gathers the energy produced by the panels during the day and gives it back in the evening. The modules can be placed one on top of the other, so that they take up little room.

One module has 5.12 kWh and continuously supports 75 A, i.e. roughly approximately 3.8 kW, with peaks of 101-120 A for 3 minutes and 121-180 A for 15 seconds for starting motors. The heating pad raises the temperature by 8 °C per hour and allows charging between -18 and 10 °C, so the battery can sit in an unheated outbuilding or in a holiday house used in winter. The service life is a minimum of 6000 cycles at 90% depth of discharge, with efficiency above 95% and a design life of up to 20 years. The module measures 442 x 530 x 140 mm and 44 kg; up to 16 modules are stacked per group (81.92 kWh) and up to 6 groups with a hub (491.52 kWh).

LFP, 5.12 kWh, 100 Ah, 51.2 V, range 47.5-57.6 V. Recommended and maximum continuous current 75 A on charging/discharging, peaks 101-120 A / 3 min and 121-180 A / 15 s; minimum 6000 cycles at 90% DoD. 442 x 530 x 140 mm (3.2U), 44 kg, wall or floor stand mounting; heating pad +8 °C/h, charging operation -18...10 °C, ambient working temperature -10...50 °C. CAN and RS485 communication, optional WiFi for remote monitoring. Maximum 16 units per group (81.92 kWh) and 6 groups with a hub (491.52 kWh). Certifications UL9540 Ed.2, UL9540A, UL1973, CEC, SGIP, CE, IEC62619, UN38.3. 10-year warranty.

Who it suits

Suitable for off-grid systems and holiday houses in areas with cold winters, where the battery sits in an unheated space and must be able to charge even in frost.

Terms explained

• Heating pad: A heating element bonded to the cells, which warms them by about 8 °C per hour so that the battery can be charged also at sub-zero temperatures, down to -18 °C.
• DoD 90%: The depth of discharge: 90% of the rated energy is used, the rest remains as a reserve to extend the service life of the cells.
• Group and hub: The modules are linked in stacks of up to 16 pieces; several stacks are joined through a hub, a communication and power distributor.

Technical specifications

Recommended applications

• Stackable residential storage, expandable in steps of 5 kWh
• Off-grid systems in areas with cold winters
• Small commercial and telecom applications

Warranty

10 years

Technical details

Specifications confirmed from the manufacturer's datasheet

Pytes V5 is an LFP module of 5.12 kWh with 100 Ah at 51.2 V and a working range of 47.5-57.6 V. The recommended and maximum continuous charging/discharging current is 75 A, with peaks of 101-120 A for 3 minutes and 121-180 A for 15 seconds. The service life is a minimum of 6000 cycles at 90% DoD, with efficiency above 95% and a design life of up to 20 years.

The module measures 442 x 530 x 140 mm (3.2U) and weighs 44 kg, being mounted on a wall or on a floor stand. The heating pad provides an increase of 8 degrees C per hour and allows charging in the -18...10 degrees C range, and the ambient working temperature is -10...50 degrees C. Communication is done through CAN and RS485, with optional WiFi for remote monitoring. Up to 16 units can be stacked per group (81.92 kWh) and up to 6 groups with a hub (491.52 kWh). Certifications: UL9540 Ed.2, UL9540A, UL1973, CEC, SGIP, CE, IEC62619, UN38.3.