How much clearance does a Battery shipping box need?

Answer: 4 mm per side suits most packs. Below 3 mm the harness is crushed, above 6 mm the pack travels before impact.

How is volumetric weight calculated?

Answer: Multiply the outer dimensions in centimetres, divide by 6000, then round the larger figure up to 0.5 kg.

Is a UN38.3 report enough to ship?

Answer: No. It covers the cell or pack; acceptance also weighs the drop record and net weight against one revision.

How many cells fit in one box?

Answer: Design by net weight: against 2.5 kg, 48 g cells give 52 in theory and 44 to 46 with cushion and dividers.

How large should a trial order be?

Answer: 500 pieces covers drop, stacking and 72 hours of salt spray; below 200, hand-cut foam beats a steel die.

How to Choose a Battery Shipping Box: Five Criteria

Quick answer: Fix the cavity and cushion first, then outer size and volumetric weight, and only then reports and latches. Reverse that order and parcels come back for repacking, or you pay freight on weight that carries nothing.

Why the Cavity Comes First in a Battery Shipping Box
Outer Dimensions and Volumetric Weight
Matching Test Reports to Carrier Acceptance
Latches, Sealing and Terminal Isolation
Trial Run and Where the Money Goes
FAQ

1. Why the Cavity Comes First in a Battery Shipping Box

A parcel is judged differently from a pallet. For a Battery shipping box the cavity and cushion come first, because courier drop height is banded by weight and 1.2 m on six faces is the usual mark below 1.5 kg. Allow 4 mm per side: less pinches the harness, more lets the pack shift.

Cushioning works in layers: a 20 mm EPE base takes the energy, 10 mm on top preloads the lid, and 2 mm PP dividers separate cells. Hold EPE compression near 25 percent.

Component	Value	Reason
Cavity allowance	4 mm per side	under 3 mm pinches wiring
Base cushion	20 mm EPE	enough below 1.5 kg
Top preload	10 mm	stops bounce after closing
Divider	2 mm PP	cells never touch
Depth allowance	8 mm	room for the harness

2. Outer Dimensions and Volumetric Weight

Outer size is derived, not chosen. Couriers divide length by width by height in centimetres by 6000, so a 300 by 220 by 120 mm Battery shipping box measures 7920 cm³, bills at 1.32 kg and rounds to 1.5 kg against a 1.1 kg pack.

Battery shipping box: olive-green case open on campsite ground, two brushed metal draw latches, folding side handle, canvas tent and pines behind

Build outward: 40 mm of cushion, two 5 mm walls, 2 mm of shut-off. A 2.5 mm PP body at this size runs on a 380 tonne press; thinning to 2.0 mm cracks the latch seat within 5,000 cycles.

Outer size mm	Volume cm³	Volumetric kg	Actual kg	Billed kg
280×200×110	6160	1.03	0.9	1.5
300×220×120	7920	1.32	1.1	1.5
350×250×150	13125	2.19	1.8	2.5
400×300×160	19200	3.20	2.6	3.5

3. Matching Test Reports to Carrier Acceptance

Paperwork shows alignment with carrier acceptance, never a regulatory finding. A UN38.3 summary, a transport appraisal or MSDS, and a packaged drop record must describe one revision of one Battery shipping box; change the wall or cavity and the record lapses.

Net weight per parcel follows the published threshold, commonly near 2.5 kg, and that number drives the cavity, since 2.4 kg and 2.6 kg cannot share a foam die.

4. Latches, Sealing and Terminal Isolation

Two latches suit a parcel-sized Battery shipping box at 3 mm preload, with 35 to 55 N of opening force. A stainless pin in a PP seat grows under 0.2 mm across 5,000 cycles.

Battery shipping box: olive-green long case closed on a ribbed van floor, a tan strap across the lid, two black latches, firewood stacked behind

IP54 covers dust and splash and suits one parcel, while IP67 pushes gasket compression to 30 percent and stiffens each latch. Metal parts take 72 hours of salt spray.

Terminal isolation separates this box from a general case: opposing poles never share a bay, dividers stand 10 mm above the posts, and harnesses are tied into slots.

5. Trial Run and Where the Money Goes

Keep a 500 piece trial to five checks: cavity size, opening force, drop, stacking and label position. Remake the first article after any tooling change, since one moved dimension moves the latch seat.

On 1,000 pieces the body mould runs RMB 60,000 to 90,000, the foam die 2,500 to 4,000, the label plate 600 to 1,200. Cutting three colours to one pays for a 20 mm base cushion.

Check	Pass mark	Sampling
Cavity size	within 1 mm	1 per 200 pieces
Opening force	35 to 55 N	5 per lot
Drop	1.2 m, six faces	3 loaded units
Stacking	24 hours, no set	2 units
Label position	20 mm from edge	full inspection
Salt spray	72 hours, no rust	2 per lot

Conclusion

The criteria run in order: cavity and cushion decide whether the pack sits still, outer size what freight costs, reports acceptance, hardware what happens in transit, trial whether a run comes back. The hard part is not finding a box but finding a Battery shipping box where every link was calculated.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.