A battery pack at 40 per cent of its original capacity looks exactly like a new one. It charges, the indicator shows green, it goes into the van - and it dies an hour into the job, with the nearest replacement twenty minutes away. Batteries are the one asset that fails invisibly while passing every glance test, and because packs are interchangeable, the weak ones keep circulating. This guide covers numbering packs so they stop being anonymous, the register that records what no label shows, and a rotation that retires dying packs before a site does it for you.
What you will learn
- Why batteries are the hardest small asset
- Number every pack first
- The battery register
- Rotation and crew assignment
- Retiring and disposing of weak packs
- Tools that make this easier
- FAQ
Why batteries are the hardest small asset
Batteries combine every awkward tracking property in one item:
- They are identical and interchangeable. Six packs from three different years look the same on a shelf, so the four-year-old one keeps getting picked up for the long job.
- They degrade invisibly. Capacity fades with age and cycles, but the pack charges and shows full right up to the day it embarrasses a crew on site.
- They migrate between hosts. A pack moves from drill to saw to light, so a weak battery makes three tools look faulty before anyone suspects the battery.
- They are individually cheap, collectively serious. No single pack justifies paperwork, but a fleet of them is real money - and in hosts like gas detectors, a dead battery is a safety event, not an inconvenience.
Number every pack first
Nothing else in this guide works until packs stop being anonymous, so labelling comes first:
- Give every pack a short, readable ID - B-001, B-002 - alongside a QR label, so packs can be named in conversation as easily as scanned.
- Place labels on a flat face away from the contacts, the rail and the vents. Tool batteries take abrasion every time they slide into a host; pick the surface that does not.
- Add the ID in paint marker as a backup. Site life eventually defeats any adhesive label; the marker keeps the identity until the label is reprinted.
- Number chargers and charging stations too. “Charge it at station 2” beats a tangle of anonymous chargers, and charger faults get blamed on packs constantly.
The battery register
The register’s job is to hold the facts a battery does not display:
| Field | Why it matters |
|---|---|
| Asset ID | Turns “a 5Ah pack” into B-014 - the unit a complaint can actually attach to |
| Platform and model | Packs fit one tool system only; this is what you reorder against |
| Chemistry and rated capacity | Sets charging practice and what healthy runtime should look like |
| Purchase date and price | Age is the best predictor of pack health, and it is invisible on the pack itself |
| Supplier and warranty | Early failures are claimable - if you can show when and where you bought the pack |
| Assigned kit, crew or vehicle | Stops packs drifting into a communal pile that nobody is responsible for |
| Condition notes | Runtime complaints and inspection results build the retirement case |
| Status | In service, suspect, retired - the suspect state is what stops bad packs circulating |
Rotation and crew assignment
A communal battery pile guarantees that the worst packs work the hardest jobs. Assignment fixes the incentives:
- Assign packs to a kit, crew or vehicle. When van 3 reports short runtimes, the suspects are van 3’s numbered packs - not the entire fleet.
- Keep ages mixed within each kit. A kit of packs bought the same week will all fade the same season; pairing older and newer packs keeps every kit usable while the old ones wind down.
- Make the complaint a record, not a remark. “This one feels weak” said in the yard evaporates; the same observation noted against B-014 starts a paper trail.
- Fold a battery glance into existing checks. Crews already doing preventive maintenance rounds on tools can confirm pack IDs and condition in the same pass - batteries never need their own ceremony, just a line in someone else’s.
Tip: when a pack draws its first runtime complaint, note it on the record the same day and mark the pack suspect. The second complaint is then a retirement decision backed by history, not a hunch argued in the yard.
Retiring and disposing of weak packs
Packs leave service on evidence: noticeably shorter runtime than sibling packs, failure to hold charge overnight, repeated complaints from different users - and immediately, without debate, for any swelling or unusual heat.
Retire packs in the register rather than deleting them, with a note of how they left - recycled, returned to the supplier, claimed under warranty. Disposal is the step to take seriously: waste packs sit in the same regulatory family as the WEEE directive and must be collected and recycled, never binned. Supplier take-back schemes and local collection points handle this; the register note proves the pack went where it should.
Tools that make this easier
Battery spreadsheets fail faster than most, because the action happens at a charging bench and in van door pockets - places where nobody opens a laptop. The sheet gets built in an afternoon of good intentions and stops matching the shelf within a month, at which point every row is a guess.
An asset management tool like AMPthilly keeps each pack as its own record with custom fields for platform, chemistry and capacity, plus purchase date, supplier and warranty for the claim that an early failure deserves. Status changes and condition notes build the retirement case over time, packs can be assigned to a person, a department (crew) or a location such as a van, and scanning the QR label with a phone camera opens the pack’s record in the browser right at the bench - no app install. The free plan covers 3 users and 25 assets, enough to number every pack on a crew or two before paying anything.
FAQ
How do you keep track of tool batteries? Number every pack, record platform, chemistry and purchase date, and assign packs to kits or crews. Individual IDs are what stop weak packs circulating anonymously.
Should every battery have its own asset ID? Yes, for any pack worth real money. Cheap disposable cells are stock; rechargeable packs are assets with individual histories.
What should I record for each battery pack? ID, platform, chemistry and capacity, purchase date and price, supplier, assignment, and condition notes. Purchase date matters most - age is invisible on the pack.
How do I know when to retire a battery pack? Repeated runtime complaints, noticeably shorter runs than sibling packs, failure to hold overnight charge - and immediately for swelling or heat.
How should old battery packs be disposed of? Through supplier take-back or a collection point, never general waste. Mark the pack retired with a disposal note instead of deleting the record.
The takeaway
Battery problems are anonymity problems. A numbered pack with a purchase date, an assignment and a complaint history is easy to manage - charge it, rotate it, retire it on evidence. An anonymous pack is a coin toss that eventually lands wrong on a job. Label the fleet, record what the packs cannot show, and let the suspect status catch the failures before a site does.