Dyness · LFP · 48VDyness B4850
Dyness B4850
Review & price SA 2026
The Dyness B4850 is a compact wall-mounted LFP battery competing directly with the Pylontech US5000 at a lower price point. Its 4.8 kWh capacity and 6,000-cycle lifespan make it an attractive alternative for budget-conscious installations, especially where wall space is limited.
Free · No obligation SAPVIA-registered only Battery included in quote
Dyness B4850 — key specs
- Usable capacity
- 4.3 kWh (4.8 kWh total)
- Price in South Africa
- R24,000 – R32,000
- Price per usable kWh
- ~R6,500/kWh
- Cycle life
- 6,000 cycles (~16 yrs at 1/day)
- Warranty
- 10 years
- Chemistry
- LFP (Lithium Iron Phosphate)
- Discharge power
- 2.4 kW continuous / 3.5 kW peak
- Round-trip efficiency
- 95%
- Installation type
- Wall-mount
- Stackable
- Yes — up to 8 units (34.4 kWh)
- Dimensions / weight
- 442 × 120 × 430 mm · 50 kg
How long does the Dyness B4850 last during load-shedding?
Backup hours based on 4.3 kWh usable capacity at typical South African home load profiles.
Small home (1–2 bed)
3–4 hrs
Essential lights, Wi-Fi, TV, device charging. ~0.5–0.8 kW load.
Medium home (3 bed)
2–3 hrs
Above + fridge + 1 × air con. ~1.0–1.5 kW load.
Large home (4–5 bed)
1.5–2 hrs
Above + security + full kitchen. ~1.5–2.5 kW load.
Stage 6 load-shedding = 4.5 hours per slot. Stage 4 = 2.5 hours per slot. Hours are approximate — actual backup time depends on your real load and battery state of charge when the outage starts.
Dyness B4850 — pros and cons
Pros
- Wall-mountable — saves floor space
- Competitive price vs Pylontech
- 6,000 cycle lifespan with 10-year warranty
- Lighter than rack-mount alternatives
Cons
- Lower brand recognition in SA market
- Fewer certified local installers familiar with Dyness BMS
- Slightly lower usable capacity than US5000
Dyness B4850 inverter compatibility
Confirmed compatible with these inverter brands common in South Africa.
Sunsynk Deye Goodwe Solis SMA
Charge power
Maximum charge rate: 2.4 kW. At this rate, the battery charges from 0–100% in 1.8 hours — typically during peak solar production hours.
Discharge power
Continuous: 2.4 kW. Peak: 3.5 kW for short bursts (e.g., motor start). Sufficient for essential home loads and appliances.