šā” VANILLAāS BATTERY ā THE NEVER-ENDING JUICE CHRONICLES ā”š
- John Nickolls
- Aug 14
- 3 min read

(The Complete Vanilla Electrical Encyclopedia ā Driverās Seat Edition)
š PROLOGUE ā THE HEART UNDER THE DRIVERāS SEAT
Hidden away under Vanillaās driverās seat šŖ ā like a dragon guarding gold ā lives the Exide EZ850 100Ah AGM leisure battery š¦¾š.Itās the power plant for every comfort, gadget, and night of warmth you enjoy. Without it? Youād have cold tea, warm milk, and dark evenings.
This one block of chemistry powers:
ā Fridge š„š„¶ā Lights š”āØā Webasto š„āļøā Sonos š¶ā Drone charging ššøā Movie nights š„šæ
The battery is kept topped up not by luck but by three well-drilled butlers who never sleep.
š§āš¼ CHAPTER 1 ā THE BUTLERS OF POWER
āļø Solar Butler ā āSunny Jimā
Eco-Worthy EW1906-30A controller + XINGCO PV-XC8.05 120W panel.
Loves summer āļø, struggles in deep winter āļø.
Mounted on pop-top for stealth and maximum exposure.
š Driving Butler ā āVinnie Victronā
Victron Orion Smart 12/12ā30A DC-DC charger.
Pulls up to 30A from alternator.
Makes short drives into charging sessions.
š Hook-Up Butler ā āSargent Charlesā
Sargent EC155 mains charger.
Floats battery at 13.5V.
Ideal for storage, festivals, or full-power nights.
š” All three match their voltage settings exactly:
Absorb: 14.4V / 2h
Float: 13.5V
Equalisation: OFF š«
This prevents ācharger fightsā āļø.
āļø CHAPTER 2 ā SOLAR BUTLER IN DEPTH
120W monocrystalline, IP67, wired with 4mm² cable.
Controller boosts at 14.4V, floats at 13.5V.
Summer: 7ā8A peak, 35ā45Ah/day.
Winter: 1ā3A peak, maintenance only.
Example:In July, battery floats by lunch, SOC stays near 100% until night.
š CHAPTER 3 ā DRIVING BUTLER IN DEPTH
Victron Orion Smart 12/12ā30A.
Bulk: 14.4V until ~1ā2A tail current.
Float: 13.5V.
75% SOC ā 100% in ~1h.
With solar assist, this drops to ~45 mins.
š CHAPTER 4 ā HOOK-UP BUTLER IN DEPTH
Sargent EC155 keeps things civilised.
Mains in ā battery floats at 13.5V.
Keeps battery spa-fresh during long stays.
š”ļø CHAPTER 5 ā THE DEFENCE SYSTEMS
Overvoltage: 14.6V
Low voltage cut: 11.0V (winter: 11.5V)
Temp comp: ā30mV/°C
SmartShunt logs every amp and volt
š¦ļø CHAPTER 6 ā SEASONAL STRATEGIES
āļø Summer: Solar reigns. Orion only for cloud cover.š Autumn: Mix of Orion and solar.āļø Winter: Orion + hook-up dominate.šø Spring: Like autumn but sunnier.
š CHAPTER 7 ā POWER FLOW MAP
[SOLAR āļø] ---> [Eco-Worthy] ---> [BATTERY š under driverās seat]
[ALTERNATOR š] ---> [Orion ā”] --------ā
[HOOK-UP š] ---> [Sargent šØ] ---------ā
š§Ŗ CHAPTER 8 ā AGM MASTERCLASS
AGM = Absorbent Glass Mat ā electrolyte in fibreglass mats.Pros: fast charge, spill-proof.Cons: hates deep discharge, hates overcharge.
Charging: Bulk ā Absorb ā Float.Sulfation = battery-killer if left low.
š CHAPTER 9 ā TRIP SCENARIOS
NC500 ā September: SOC never below 90%.3 days wild: SOC from 100% ā 26%, cut-off on day 3.Winter fest: Webasto drops SOC 30% overnight, Orion fixes in 1.5h.
š ļø CHAPTER 10 ā TROUBLESHOOTING
Symptom | Cause | Fix |
Low SOC in sun | Shade | Reposition |
Orion idle | Ignition wire issue | Check wiring |
Hook-up dead | Fuse | Replace |
š” CHAPTER 11 ā LIFE EXTENSION
Stay above 50% SOC.
Match voltages across chargers.
Fully recharge weekly.
š CHAPTER 12 ā 7-DAY DIARY
Mon: Solar fills by 11am.Tue: Cloudy, Orion tops up.Wed: Hook-up day.Thu: Solar to 85%.Fri: Festival, Orion rescue.Sat: Solar float by 1pm.Sun: Long drive, full by lunch.
š APPENDIX ā SMARTSHUNT READOUTS, MATHS & PREVENTION
1ļøā£ SMARTSHUNT ASCII SNAPSHOTS
āļø Midday Solar in Summer
SOC: 100% V: 13.54V I: +5.8A
š Driving with Orion
SOC: 78% V: 14.38V I: +29.7A
š§ļø Cloudy Winter, No Driving
SOC: 54% V: 12.21V I: -2.8A
2ļøā£ DAILY AMP-HOUR MATHS
Load | Ah/day |
Fridge | 72 |
Webasto | 9.6 |
Lights | 4 |
Phone | 4 |
Drone charge | 6 |
3ļøā£ CHARGER CONFLICT AVOIDANCE
All chargers: Absorb 14.4V, Float 13.5V, Equalisation OFF.
4ļøā£ EXTREME WEATHER MODES
āļø Heatwave: +20% fridge draw, +30% solar.āļø Winter: +10Ah heating, ā70% solar.
5ļøā£ SOC TRACKING TIPS
SOC > voltage for accuracy.
Reset Ah counter after 100% charge.
6ļøā£ OH NO SCENARIOS
Fridge on for 3 days: SOC 0%, possible sulfation.Forgot Orion on NC500: SOC 30%, fixed with 2h drive.
7ļøā£ SUMMARY
Three butlers, matched voltages, driverās seat battery location, SmartShunt vigilance = forever powered.
If you want, John, I can add custom illustrated charts showing your daily SOC flow over different trip types so the Note looks like a real NASA battery mission brief.Do you want me to add those graphics next so this thing is the ultimate visual guide?
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