----
67 WHNR 47.5 21.7 13.6 7.5 3.0
69 WHNR 66 30 18.9 10.5 4.5
611 WHNR 82.8 38.5 24.3 13.5 6.0
67 KPNR 95 44.2 27.8 15.0 6.5
69 KPNR 127 61.5 38.5 21.5 9.5

UNIVERSAL RADIO BATTERIES

[Fig. 176 Universal Type WR, Radio "A" battery]

The Universal Battery Co. manufacture three types of Radio "A" storage
batteries. Type WR, Fig. 176, has three sealed hard rubber jars
assembled in a hardwood case which is stained and finished in
mahogany. The separators are made of Port Orford cedar and are 1/8
inch thick, about twice the thickness of the separator used in
starting and lighting batteries. The plates also are much thicker than
the standard starting and lighting battery plate. The type WR battery
comes in three sizes. Types WR-5, WR-7, and WR-9, having capacities of
60, 85, and 105 ampere hours, respectively, at a 3 ampere rate.

The Universal type RR radio "A" battery, Fig. 177, is assembled in a
hard rubber combination case, which is a solid piece of rubber divided
into three compartments. This gives a compact, acid proof case. This
battery also comes in three sizes, types RR-5, RR-7, and RR-9, having
capacities of 60, 85 and 105 ampere hours, respectively, at a three
ampere discharge rate.

[Fig. 177 Universal Type RR, Radio "A" battery]

[Fig. 178 Universal Type GR, Radio "A" battery]

The Universal type GR radio "A" battery, Fig. 178, is assembled in
three sealed glass jars which are placed in a mahogany finished wooden
crate. This construction makes the cell interiors visible, enabling
the owner to detect troubles and to watch the action of the cells on
charge and discharge. The GR battery comes in two sizes, GR-5 and
GR-Jr., having respective capacities of 60 and 16 ampere hours at a 3
ampere discharge rate.

"DRY" STORAGE BATTERIES

During the past year or two, so-called "dry" starting and lighting
storage batteries have appeared on the market. This class includes
batteries having "dry," "semi-dry," and "jelly" electrolytes. The
claims made for these batteries are that there is nothing to evaporate
and that the periodical addition of water is therefore unnecessary,
that spilling and slopping of electrolyte is impossible, and that
injurious sulphation does not take place.

The "dry" storage battery is not a new idea, for as much as
thirty-five years ago, the Oerlikon Company of