From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Test report comparing the performance of battery cells with and without the 'Nemolyt' additive.
| Identifier | ExFiles\Box 164\4\ img158 | |
| Date | 12th May 1934 | |
| - 2 - Cell Number Details 1 (Nemolyt) (Cell) 2 (Nemolyt) (Cell) 3 (Standard) (Cell) Duration of discharge No.1 at 7.6 amps. to 0.5v. prior change of electrolyte. 11.1 hours 11.3 hours 11.5 hours End-of-charge voltage at 5 amps. after filling cells 1 & 2 with Nemolyt (temp.= 77°F.{Mr Friese}) 2.59 2.60 2.60 Duration of discharge No.2 at 7.6 amps. to 1.70 volts (temp.= 75/86°F.{Mr Friese}) 11.0 hrs. 11.1 hrs. 11.2 hrs. Duration of discharge No.3 at 7.6 amps. to 1.70 volts (temp. 75/72°F) 11.2 " 11.3 " 11.3 " Duration of discharge No.4 at 200 amps. to 1.35 volts (temp.= 77/95°F) 9.7 mins. 9.8 mins. 9.8 mins. Initial voltage at 200 amps. 1.84 1.845 1.86 The above readings indicate that the performance with Nemolyt is not appreciably different from that with ordinary acid. CONCLUSION. Nemolyt dope has no novel features with regard to its composition and, as with the majority of dopes, its use is to be deprecated principally on account of the probability of resultant excessively high sp.{Mr Spinney}gr.{George Ratcliffe} of electrolyte. Tartaric acid and oxalic acid have been used with success (as in DAR and the D & B Process) in giving cells prolonged charging for the benefit of badly sulphated negative plates without subjecting the positives to an unnecessary amount of charging. ECM/LJ. 12.5.34. | ||