HazMat Tool — substance information

Batteries, wet, filled with alkali, electric storage

HMT May 2026

UN / ID: UN 2795
Hazard class: 8
Packing group: —
ERG guide: ERG 154
Special provisions: SP A51
Source: 49 CFR §172 (2026/05)

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Batteries, wet, filled with alkali, electric storage

Emergency Response Guide No. 154

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

8
Corrosive liquids

(7) Special Provisions (§172.102)

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.

A51	For aircraft batteries, irrespective of the quantity limitations specified in Column (9A) of the §172.101 Table or §175.75, wet cell batteries, UN2794 or UN2795, up to a limit of 100 kg net mass per package may be transported aboard passenger aircraft. Transport in accordance with this special provision must be noted on the shipping paper. Browse special provision A51

(8) Packing Authorizations (§173.***)

(8A) Exceptions	159	see 49 CFR §173.159
(8B) Non-bulk	159	see 49 CFR §173.159
(8C) Bulk	159	see 49 CFR §173.159

(9) Quantity Limits

(9A) Passenger aircraft/rail	30 kg
(9B) Cargo aircraft only	400 kg

(10) Vessel stowage

(10A) Location

Stowage category “A” means the material may be stowed “on deck” or “under deck” on a cargo vessel or on a passenger vessel.

Source: 49 CFR §172.101(k)

(10B) Other

52	see 49 CFR §176.84
146	see 49 CFR §176.84

Source: 49 CFR §176.84

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Note: In this segregation and separation chart are HazMat of hazard class 8 considered depending if there are liquid. Currently HazMat Tool is not able to to check if a HazMat is liquid or not. Therefore it is assumed as liquid. See PHMSA Interpretation #09-0252.

Hazard class	8	7	6.1	5.2	5.1	4.3	4.2	4.1	3	2.3B	2.3A	2.2	2.1	1.6	1.5	1.4	1.3	1.1/1.2
1.1/1.2
1.3
1.4
1.5
1.6
2.1
2.2
2.3A
2.3B
3
4.1
4.2
4.3
5.1
5.2
6.1
7
8

	Must not be loaded, transported, or stored together in the same vehicle or facility.
	May be loaded, transported, or stored together.
	May be loaded, transported, or stored together only with restrictions.

Similar substances

UN / ID	Proper shipping name	Hazard class
UN 3536	Lithium batteries installed in cargo transport unit lithium ion batteries or lithium metal batteries	9
UN 3481	Lithium ion batteries contained in equipment including lithium ion polymer batteries	9
UN 3481	Lithium ion batteries packed with equipment including lithium ion polymer batteries	9
UN 3091	Lithium metal batteries contained in equipment including lithium alloy batteries	9
UN 3091	Lithium metal batteries packed with equipment including lithium alloy batteries	9
UN 3028	Batteries, dry, containing potassium hydroxide solid, electric storage	8
UN 3480	Lithium ion batteries including lithium ion polymer batteries	9
UN 3090	Lithium metal batteries including lithium alloy batteries	9
UN 2794	Batteries, wet, filled with acid, electric storage	8
UN 2800	Batteries, wet, non-spillable, electric storage	8
	Electrolyte (acid or alkali) for batteries, see Battery fluid, acid or Battery fluid, alkali
	Batteries, dry, sealed, n.o.s.
UN 3292	Batteries, containing sodium	4.3