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FORTE × KIJO

UPS Runtime Calculator

Select the power rating and required runtime to find a suitable battery capacity.

FORTE GREEN POWER

FORTE GP33

30 kVA / kW

Calculation at 100% load

FORTE GP33 SeriesSeries image. Configuration depends on the power rating.
1 kVA300 kVA
Select from 1 to 10,080 minutes.
Auto first sizes a single string, then increases the number of strings.
Default: 40 batteries. You can increase or decrease the number. All strings are identical.

Preliminary selection

40 Batteries per stringPF 1,096% efficiency

KIJO batteries

65 Ah

1 strings × 40 = 40 batteries of the same model

Requested 30 minEstimated runtime ≈ 46.4 min*
Battery catalog ↗

A selection of 32–50 batteries per string applies only to models supporting the corresponding battery voltage range. An engineer must confirm compatibility and settings.

This is a preliminary estimate. Contact PES POWER engineers for an accurate runtime calculation.

Confirm configuration via WhatsAppThe calculation parameters will be included in your message.
How runtime is calculated

For 1 / 2 / 3 kVA, the standard set contains 2 / 4 / 6 batteries rated 9 Ah respectively, providing approximately 5 minutes at full load. The total number of batteries increases in multiples of the standard set, including internal batteries. Runtime is estimated as 5 minutes × number of sets. For example, at 3 kVA: 6 batteries — 5 minutes, 12 — 10 minutes, 18 — 15 minutes.

* Selection is based on indicative PES POWER data at full load, PF 1.0 and 96% efficiency. Values do not guarantee runtime. For 10–200 kVA, the base string contains 40 batteries; for 250 kVA, source data is for 2 strings (80 batteries); for 300 kVA, it is for 3 strings (120 batteries).

For 10–300 kVA, runtime is provisionally scaled in proportion to the total number of batteries relative to the original configuration, then increased by 3% based on a PES POWER estimate. This increase is an assumption, not a verified runtime margin. It does not apply to 6 kVA or 1–3 kVA. This is a simplified estimate, not an exact discharge characteristic. Automatic selection first checks 40 batteries and available capacities in one string, then adjusts the count up to 50 before adding strings. Manual selection allows 32 to 50 batteries. For 15 kVA, the average of the 10 and 20 kVA data is used. The 24–26 Ah capacity is shown as a range; an engineer selects the exact KIJO model. Other capacities, including 150 Ah, require an individual calculation.

An engineer will check discharge characteristics, currents, DC bus voltage, charger, temperature and battery condition. For 6 kVA, a string of 40 batteries is used: 7.5 Ah — 25 minutes, 9 Ah — 30 minutes, 17 Ah — 70 minutes, 26 Ah — 115 minutes.

Open battery datasheets