| Description | Date | Identifier | |
| Graphical chart recording an electrical test, displaying amperage over time. | 4th Sep 1928 | Box 54 \ 1 Scan299 | |
| Tests conducted on SU and SV batteries, detailing cell configuration and discharge results. | 6th Sep 1928 | Box 54 \ 1 Scan300 | |
| Instructions and results for a high-rate discharge test on battery cells through a constant external resistance. | 8th Dec 1924 | Box 54 \ 1 Scan301 | |
| Instruction sheet detailing the failure analysis of a P&R battery cell. | 3rd Oct 1928 | Box 54 \ 1 Scan302 | |
| Electrical experimental record sheet for a P&R & Exide Sandwich battery. | 3rd Oct 1928 | Box 54 \ 1 Scan303 | |
| Electrical experimental record sheet for a P & R & Cside Sandwich Battery. | 3rd Oct 1928 | Box 54 \ 1 Scan304 | |
| Investigation into the failure of a P&R battery cell due to the stretching of positive plates. | 3rd Oct 1928 | Box 54 \ 1 Scan305 | |
| Letter to Peto & Radford concerning P & R cell failures in sandwich batteries. | 5th Oct 1928 | Box 54 \ 1 Scan306 | |
| The failure of a P & R cell in an S4 battery (157) during a bench life test. | 3rd Oct 1928 | Box 54 \ 1 Scan307 | |
| The failure of a P & R cell in an SX battery after 13,787 miles. | 3rd Oct 1928 | Box 54 \ 1 Scan308 | |
| Letter from Peto & Radford concerning modifications to future Sandwich batteries based on recent tests. | 9th Oct 1928 | Box 54 \ 1 Scan309 | |
| Letter to Messrs. Peto & Radford regarding reporting failures of Sandwich Batteries. | 10th Oct 1928 | Box 54 \ 1 Scan310 | |
| Instruction sheet regarding the failure and replacement of a battery cell. | 19th Oct 1928 | Box 54 \ 1 Scan311 | |
| Graph chart showing the results of an electrical test, likely a battery discharge curve, with handwritten calculations. | 25th Oct 1928 | Box 54 \ 1 Scan312 | |
| Test report on an S1 battery after extended bench testing and road use. | 26th Oct 1928 | Box 54 \ 1 Scan313 | |
| Instructions regarding the failure of a P&R battery cell due to sediment accumulation. | 12th Nov 1928 | Box 54 \ 1 Scan314 | |
| Instruction sheet detailing the failure of a P&R S2 battery cell after a bench life test. | 12th Nov 1928 | Box 54 \ 1 Scan315 | |
| Letter to a supplier discussing battery cell failures and test results. | 1st Jan 1929 | Box 54 \ 1 Scan316 | |
| Letter to The C.E.S. Co. about the performance of Exide type 40/50 batteries in tests and on customer cars. | 11th Jun 1925 | Box 54 \ 1 Scan317 | |
| Experimental record chart for a PaR & Goude Sandwich Battery, detailing dates, locations, tests, and mileage. | 11th Jun 1925 | Box 54 \ 1 Scan318 | |
| Electrical experimental record sheet for a Sandwich Battery S2 (155) E+ Exide box. | 16th Feb 1927 | Box 54 \ 1 Scan319 | |
| Electrical experimental record sheet tracking the testing and usage of a Sandwich Battery. | 19th Apr 1926 | Box 54 \ 1 Scan320 | |
| Failed battery cell on car 10-EX and a request to access the battery box. | 10th Jan 1929 | Box 54 \ 1 Scan321 | |
| Letter to Peto & Radford regarding failures of P & R. cells in sandwich batteries, referencing attached reports. | 17th Jan 1929 | Box 54 \ 1 Scan322 | |
| The failure of two P & R battery cells, detailing mileage, age, and condition upon dismantling. | 16th Jan 1929 | Box 54 \ 1 Scan323 | |
| Letter from accumulator manufacturers Peto & Radford acknowledging receipt of a letter with reports. | 18th Jan 1929 | Box 54 \ 1 Scan324 | |
| Letter to Messrs. Peto & Radford concerning the cracking and leakage of Dagenite battery cells. | 26th Feb 1929 | Box 54 \ 1 Scan325 | |
| Letter from accumulator manufacturer Peto & Radford regarding cracked Dagenite cells. | 27th Feb 1929 | Box 54 \ 1 Scan326 | |
| Instruction sheet detailing the cause of a P&R battery cell failure after extensive road and bench testing. | 15th Apr 1929 | Box 54 \ 1 Scan327 | |
| Instruction sheet detailing an inspection and condition of positive plates. | 12th Aug 1924 | Box 54 \ 1 Scan328 | |
| Graphical chart recording the performance test of a Sandwich Battery. | 27th Nov 1925 | Box 54 \ 1 Scan329 | |
| Graph chart displaying test results with handwritten annotations. | 1st Jun 1926 | Box 54 \ 1 Scan330 | |
| Chart recording the results of an electrical test, likely a battery discharge, over an 8-hour period. | 17th Mar 1927 | Box 54 \ 1 Scan331 | |
| Battery discharge test chart showing average amperes, hours, and total ampere-hours. | 7th Jan 1926 | Box 54 \ 1 Scan332 | |
| Chart recording of an electrical test, showing amperage over time with calculated values. | 5th Mar 1928 | Box 54 \ 1 Scan333 | |
| Chart recording of a battery discharge test comparing P&R and Exide cells. | 30th Jun 1925 | Box 54 \ 1 Scan334 | |
| Battery discharge test graph comparing P&R cells with Exide cells. | 7th Jul 1925 | Box 54 \ 1 Scan335 | |
| Chart recording from a Megger instrument showing the results of an electrical test. | 17th Nov 1926 | Box 54 \ 1 Scan336 | |
| Performance graph with handwritten test result calculations. | 20th Sep 1927 | Box 54 \ 1 Scan337 | |
| The failure of a P&R cell in an SX battery after testing. | 20th Jun 1929 | Box 54 \ 1 Scan338 | |
| The life and performance tests of an SX Battery (159). | 11th Jul 1929 | Box 54 \ 1 Scan339 | |
| Battery cell's mileage and bench life test duration. | 22th Jul 1929 | Box 54 \ 1 Scan340 | |
| Low and high rate discharge tests and life tests performed on SU and SV batteries. | 22th Jul 1929 | Box 54 \ 1 Scan341 | |
| Chart recording an electrical test measuring amperes over time. | 19th Jul 1929 | Box 54 \ 1 Scan342 | |
| Electrical experimental record sheet for a 12V Reboudé Sandwirl battery. | 14th Apr 1927 | Box 54 \ 1 Scan343 | |
| Electrical experimental record sheet for a P & R & Exide Sandwich Battery test. | 19th Apr 1926 | Box 54 \ 1 Scan344 | |
| Log sheet tracking the usage and failure of a P&R+Exide Sandwich Battery. | 18th Sep 1929 | Box 54 \ 1 Scan345 | |
| Failure analysis report on an Exide battery cell after a bench life test. | 13th Aug 1929 | Box 54 \ 1 Scan346 | |
| The failure analysis of a P&R battery cell following extensive road and bench testing. | 18th Sep 1929 | Box 54 \ 1 Scan347 | |
| Electrical experimental record sheet for a P+R+ Exide Sandwich Battery and P+R Box. | 18th Apr 1927 | Box 54 \ 1 Scan348 | |
| Electrical experiment record sheet for a P&R & C Exide Sandwich Battery S1(154), page 2. | 16th Jan 1929 | Box 54 \ 1 Scan349 | |
| Electrical experimental record sheet for battery S1 (154), page 3. | 13th Nov 1929 | Box 54 \ 1 Scan350 | |
| The failure analysis of cell No. 4 in an SX Exide battery after a life test. | 28th Feb 1930 | Box 54 \ 1 Scan351 | |
| The failure of slotted ebonite separators and a proposed superior circular hole perforated design. | 27th Mar 1930 | Box 54 \ 1 Scan352 | |
| Electrical experimental record sheet for an S.V. Battery (177) detailing tests and outcomes from 1926 to 1930. | 27th Mar 1930 | Box 54 \ 1 Scan353 | |
| Electrical experimental record sheet for an SU Battery (176), page 2. | 27th Mar 1930 | Box 54 \ 1 Scan354 | |
| Experimental record sheet detailing the testing and usage of an SV Battery (176). | 17th Jul 1929 | Box 54 \ 1 Scan355 | |
| Failure of a P&R cell in an SV Battery during a bench life test. | 27th Mar 1930 | Box 54 \ 1 Scan356 | |
| The failure of a cell in an SV battery, detailing its service history and the condition of its components. | 15th Apr 1930 | Box 54 \ 1 Scan357 | |
| Note on a failure caused by stretching positive plates and shorting on negative straps. | 24th Apr 1930 | Box 54 \ 1 Scan358 | |
| Test results for an SX Battery (157), detailing bench life, low-rate, and high-rate discharge performance. | 24th Apr 1930 | Box 54 \ 1 Scan359 | |
| Failure report on an SX Battery where the positive terminal post has pulled out. | 29th Apr 1930 | Box 54 \ 1 Scan360 | |
| The condition of cell components after a 26-month bench life test. | 29th Apr 1930 | Box 54 \ 1 Scan361 | |
| Outlining decisions on the 40/50 chassis battery, including adopting Exide's proposals and arranging a future conference. | 28th Nov 1923 | Box 54 \ 2 Scan001 | |
| Recommending the compulsory use of ebonite separators in the 20 HP P & R battery. | 28th Nov 1923 | Box 54 \ 2 Scan002 | |
| Standardisation of 40/50 and 20 HP batteries. | 30th Nov 1923 | Box 54 \ 2 Scan003 | |
| New battery proposals, the postponement of a conference due to illness, and ebonite separators. | 7th Dec 1923 | Box 54 \ 2 Scan004 | |
| Secret memo discussing the fixed dimensions for batteries and their boxes for the 40/50 & E.A.C. car models. | 20th Dec 1923 | Box 54 \ 2 Scan005 | |
| Query regarding proposed battery dimensions for the E.A.C. chassis and 40/50 cars. | 20th Dec 1923 | Box 54 \ 2 Scan006 | |
| Secret internal memorandum discussing battery options and fitting issues for 40/50 & E.A.C. models. | 1st Jan 1924 | Box 54 \ 2 Scan007 | |
| Fitment of P & R and Exide batteries in a car frame. | 11th Aug 1920 | Box 54 \ 2 Scan008 | |
| Correcting an error where the dimensions for a Goshawk battery were given instead of those for the 40/50 model. | 25th Jan 1924 | Box 54 \ 2 Scan009 | |
| Correspondence regarding battery dimensions and capacity for a 40/50 HP Chassis. | 25th Jan 1924 | Box 54 \ 2 Scan010 | |
| Forwarding a letter from the Chloride Electrical Storage Co. Ltd. regarding lug terminals on batteries for the 40/50 HP Chassis. | 28th Jan 1924 | Box 54 \ 2 Scan011 | |
| Letter from a battery supplier discussing dimensions and terminal specifications for a 40/50 HP chassis. | 25th Jan 1924 | Box 54 \ 2 Scan012 | |
| Continuation page of a letter from The Chloride Electrical Storage Company Ltd. concerning battery cell patterns. | 25th Jan 1924 | Box 54 \ 2 Scan013 | |
| Specification for an 'Exide' battery for 40/50 HP cars. | 25th Jan 1924 | Box 54 \ 2 Scan014 | |
| Correspondence regarding battery specifications, dimensions, and quotations for the 40/50 HP Chassis. | 31th Jan 1924 | Box 54 \ 2 Scan015 | |
| Battery delivery timelines and a required decision on terminal design. | 31th Jan 1924 | Box 54 \ 2 Scan016 | |
| Confirming a letter was sent to battery suppliers regarding the 40/50 HP Chassis. | 1st Feb 1924 | Box 54 \ 2 Scan017 | |
| Letter to The Chloride Electrical Storage Co. Ltd. about modifying battery terminal specifications for the 40/50 HP Chassis. | 1st Feb 1924 | Box 54 \ 2 Scan018 | |
| Altering the 40/50 chassis battery specification to ensure terminals are identical and interchangeable. | 2nd Feb 1924 | Box 54 \ 2 Scan019 | |
| Confirming the price of batteries for the 40/50 HP chassis from supplier Peto & Radford. | 4th Feb 1924 | Box 54 \ 2 Scan020 | |
| Final details and manufacturing approval for the new 40/50 HP chassis battery. | 5th Feb 1924 | Box 54 \ 2 Scan021 | |
| Letter regarding correspondence with Chloride Co. and Peto & Radford about battery cell terminals for the 40/50 HP Chassis. | 13th Feb 1924 | Box 54 \ 2 Scan022 | |
| Copy of a letter from Peto and Radford to Rolls Royce regarding battery connection specifications and issues. | 12th Feb 1924 | Box 54 \ 2 Scan023 | |
| Battery connection issues on the 40/50 and 20HP chassis, proposing to adopt the 40/50 scheme on the 20HP. | 14th Feb 1924 | Box 54 \ 2 Scan024 | |
| Retaining the existing bolted cell-to-cell connections for new P. & R. and Exide batteries on the 40/50 HP model. | 14th Feb 1924 | Box 54 \ 2 Scan025 | |
| Specification No. 301 for a 40/50 HP chassis lighting and starting 12-volt battery. | 8th Mar 1924 | Box 54 \ 2 Scan026 | |
| Specifications for a battery, including its case, weight, and the dimensions of its cells. | 8th Mar 1924 | Box 54 \ 2 Scan027 | |
| Page detailing specifications for battery cells, their layout, terminals, and connections, including a diagram. | 8th Mar 1924 | Box 54 \ 2 Scan028 | |
| Specifications for battery cell sealing compound and plate grids. | 8th Mar 1924 | Box 54 \ 2 Scan029 | |
| Technical specifications for the design of car batteries, covering components and operational considerations. | 1st Mar 1924 | Box 54 \ 2 Scan030 | |
| Request to obtain three standard 40/50 batteries for the Experimental Department. | 11th Jun 1924 | Box 54 \ 2 Scan031 | |
| Confirming the acquisition and transfer of new Exide and P & R batteries for 40/50 HP models. | 16th Jun 1924 | Box 54 \ 2 Scan032 | |
| Battery availability and replacement options for 40/50 chassis. | 12th Jul 1924 | Box 54 \ 2 Scan033 | |
| The weight of the new standardized 40/50 battery. | 14th Jan 1924 | Box 54 \ 2 Scan034 | |
| Correspondence concerning battery specifications and a discrepancy in cell height for 20HP and 40/50HP models. | 21th Jul 1924 | Box 54 \ 2 Scan035 | |
| Extract from a letter regarding revised specifications for batteries. | 18th Jul 1924 | Box 54 \ 2 Scan036 | |
| Letter providing comments on specifications, particularly regarding sealing compound. | 30th Jul 1924 | Box 54 \ 2 Scan037 | |
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