Facility managers spend weeks comparing floor scrubbers and about ten minutes deciding where to plug one in. That second decision is the one Cal/OSHA is more likely to write up. California Code of Regulations Title 8, Section 5185 — "Changing and Charging Storage Batteries" — applies to the batteries in your floor scrubber and sweeper, not just to your forklift fleet. After 30 years of service calls across Los Angeles, Orange County, Riverside, and San Bernardino, we can tell you the charging corner is where good equipment programs quietly fall apart.
What §5185 Actually Says
The regulation is short and specific. According to Cal/OSHA's published text of §5185, battery charging installations shall be located in areas designated for that purpose, and employees assigned to work with storage batteries shall be qualified employees and shall be instructed in emergency procedures. That single sentence rules out the most common setup we see: an extension cord run to whatever outlet is closest to the dock door, with whoever happens to be on shift handling the plug.
Where batteries can vent flammable gas or corrosive mist, §5185 requires the space to be ventilated — by natural or mechanical means — to keep flammable gas concentrations below 20% of the lower explosive limit and to control electrolyte mist. The section also requires means to neutralize or dispose of spills, prohibits smoking in the charging area, requires precautions against static discharge, open flames, sparks, short circuits, and electric arcs, and requires that chargers be turned off when leads are connected or disconnected. Battery racks must be non-sparking or coated to that effect, and metal tools have to stay off the tops of uncovered batteries.
Two more that get missed constantly: charging equipment has to be protected from damage by mobile equipment — meaning bollards or guarding if your charger sits in a forklift aisle — and mechanical lifting devices must be provided for handling batteries. Nobody should be wrestling a 200-pound wet cell by hand.
Eyewash: It Depends on Your Battery Chemistry
Section 5185 requires facilities for quick drenching or flushing of the eyes and body per §5162, with two exceptions — batteries equipped with explosion-resistant or flame-arrestor type vents, or batteries located so as to preclude employee exposure. This is where chemistry matters.
If you're running flooded lead-acid batteries, you are handling electrolyte, checking specific gravity, and topping off with distilled water. Full ventilation, spill neutralization, and eyewash provisions apply, and §5185 spells out the details right down to covering the open end of the hydrometer when moving between cells. Sealed AGM batteries eliminate watering and dramatically reduce mist exposure, which is a large part of why they've taken over mid-size scrubber fleets. Lithium batteries change the picture again — no electrolyte handling, no watering, no acid spill risk — but they are not a free pass. Charging area designation, mobile-equipment protection, spark control, and trained operators still apply, and lithium packs carry their own thermal considerations that belong in your emergency procedures.
The Charger Is Half the Compliance Problem
The single most common violation we find has nothing to do with signage. It's a charger that doesn't match the battery. A flooded-profile charger connected to an AGM or lithium pack will overcharge it — driving gassing and heat that your ventilation was never sized for, while destroying a battery set that should have lasted years. We see this constantly on used equipment that changed hands with the original battery charger left behind at the previous facility.
Match the charger to the chemistry, the voltage, and the amp-hour capacity. If you swap battery types in a Tennant, Nilfisk-Advance, Factory Cat, or Minuteman machine, the charger swaps with it. On lithium conversions, the charger and the battery management system have to be a matched pair — this is not a place to improvise.
A Practical Charging Area Checklist
Walk your own facility with this list. Designated and marked area — not a hallway or a random outlet. Ventilation appropriate to the battery type and the number of units charging at once. No smoking, no open flame, no spark sources in the zone. Physical protection for the charger from forklift and pallet jack traffic. Spill neutralization and eyewash where flooded batteries are in play. Trained, designated employees — with the training documented. Chargers off before connecting or disconnecting leads. Clear floor space so a machine can be positioned and braked without blocking an aisle.
None of this is expensive. Almost all of it is cheaper than one battery replacement, and far cheaper than a citation.
Where We Fit In
When our technicians are on-site for scheduled service or repairs, the charging setup is part of what they look at. We load-test batteries, verify the charge profile matches the pack, and flag chargers that are cooking a battery set months before the operator notices reduced runtime. On our rental units, the battery is load-tested and the charger verified before the machine leaves the shop — because a rental that arrives with the wrong charger is a rental that arrives with a problem.
If you're not sure what chemistry is in your machines or whether your charger matches, that's a five-minute phone call. It's a much longer conversation after an inspection.
This article summarizes selected provisions of Title 8 §5185 and is not a substitute for reading the full regulation or consulting your own safety and compliance advisors.
