Ventilation

The RAMFAN M-Series 40V / 10Ah battery pack powers the EX50Li line. It is a water-resistant lithium-ion pack whose electronics carry built-in protection, monitoring, power control and battery conditioning. It fits the EX50Li Gen3 and retrofits to Gen2. What does PRO//connect actually give you? PRO//connect is RAMFAN's wireless link into the pack. It reports the pack's condition over time, measures internal conditions, tracks cycle counts, upgrades BMS firmware and supports basic maintenance and troubleshooting without opening anything. Why it matters on a fleet: a battery's age is invisible until it fails on a job. Cycle counts read off the pack turn "this one feels weak" into a number you can act on, and firmware moves to the pack instead of the pack moving to a bench. [PROOF: fleet size and the interval at which [CLIENT NAME] now retires a pack, once cycle data was available] What happens if one cell fails in the field? The M and R-Series packs are built with fail-safe redundancy: if a single cell fails, the pack stays operational. Packs are also swappable, so a discharged pack can be exchanged for a charged one without powering the equipment down. The failure mode this addresses: on a ventilation job the cost of a dead pack is not the pack, it is the interruption. Hot-swapping keeps the fan running through the exchange. [PROOF: measured downtime avoided per swap on a [JOB TYPE] callout] Does it work in the cold? Preheat Mode activates in cold-temperature conditions and uses the internal battery architecture to raise cell temperature safely before load, which improves cold-weather performance and readiness. It runs transparently to the user, with status visible through PRO//connect. [PROOF: lowest ambient temperature at which [CLIENT NAME] has started a pack in Preheat Mode, and the time to ready] How is it charged? Two dual-pack rapid chargers cover mains and vehicle power, both charging two packs at once: R25515: 120 to 240 VAC input, 3A per pack, simultaneously. R25515DC: 12 to 24 VDC input, 1.5A per pack, simultaneously. RAMFAN recommends ordering two packs so one is always charged. Specifications above are RAMFAN's published figures for this order number. Source: https://www.ramfan.com/product/ramfan-40v-10ah-battery-pack