"الملف 3/30 تجهيزات الزورق البخاري" [و‎‎٢‎٣‎٠] (٦١٤/٤٤٧)

Supplement a ry Instructions for Initial Pilling
and charging of Type NH10A batteries*
The contents of one 2 oz» tin of dry flake electro
lyte when dissolved in the correct amount of distilled water
provides sufficient liquid electrolyte of correct specific
gravity for filling one type NH10A battery. Note that the
battery consists of two cells welded together, so that each
cell must be filled with solution to just over plate level*
Mixing Electrolyte and filling cells.
Mix the electrolyte in accordance with the instruc
tions on the tin, and which are repeated as follows:-
"HIGHLY CORROSIVE - Keep away from clothes and fingers. Use
a plain iron, glass or porcelain vessel of not less than
one pint capacity for mixing* On no account use soldered,
tinned, aluminixm, copper or galvanised vessels* Put whole
contents of the tin in the vessel and add three full tins of
distilled water, using this tin for a measure* Stir
solution with glass rod or wooden stick*"
The specific gravity will be approx* 1*19 but there
is no need to check this particularly*
Remove the vent plug from each cell in the battery,
and fill the cells to just over plate level* Allow battery to
stand for say 12 hours, then as the plates will have absorbed a
certain amount of the solution, restore the level within the
cells by adding distilled water*
Initial C h arging*
With the vent plugs still out, the battery should
now be charged at 1»5 amperes constant current for approx*
/"V 16 hours* A charging voltage range 2»5/3»5 volts is needed*
After end of charge allow six hours to elapse before
inserting the vent plugs* This permits gases generated during
charge to escape* Before fitting the vent plugs inspect the
electrolyte levels in the cells and if below normal restore by
adding distilled water.