Blackbrogue1962
VIP Member
I have been wondering if it was worth buying a power station and was considering the Jackery Explorer 1000v2 on a Black Friday deal of £399. Given our use of our 24 Ocean, the only use of power other than the fridge and the lights are iPhone and iPad charging. I thought I’d ask ChatGPT for advice. Based on this my conclusion is that a power bank wouldn’t really be of much benefit, but I’d be interested in other peoples views on the AI advice copied below:
Good — clear question. Short answer first: the Jackery will give you a lot of extra phone/tablet charges (many days’ worth) but it will only modestly extend how long the leisure batteries can run the fridge and lights — because phones/tablets use very little energy compared with a fridge.
Assumptions I used
(Using 1,000 Wh usable from Jackery)
Effect on fridge & lights runtime (what really matters)
Small electronics don’t use much energy compared with a fridge. To show the effect, here are illustrative examples.
Good — clear question. Short answer first: the Jackery will give you a lot of extra phone/tablet charges (many days’ worth) but it will only modestly extend how long the leisure batteries can run the fridge and lights — because phones/tablets use very little energy compared with a fridge.
Assumptions I used
- Your van leisure bank: 2 × 75 Ah at 12 V = 1,800 Wh total.
Typical safe usable (to protect lead-acid/AGM) ≈ 50% → ~900 Wh usable. - Jackery Explorer 1000 v2: 1,070 Wh rated capacity. For USB/DC device charging you can effectively use most of that, so I’ll round to ≈1,000–1,070 Wh usable for simplicity.
- Device battery sizes (typical examples):
- Smartphone ≈ 12 Wh (typical modern phone ~10–15 Wh).
- Tablet (iPad) ≈ 32 Wh.
- USB/DC charging losses are small — I’ll assume ~95% efficiency for Jackery → device charging (so Jackery usable available for small-device charging ≈ 1,000 Wh).
(Using 1,000 Wh usable from Jackery)
- Full phone charge ≈ 12 Wh → ~83 full phone charges (1000 / 12 ≈ 83).
- Full iPad charge ≈ 32 Wh → ~31 full iPad charges (1000 / 32 ≈ 31).
- Example mix: 2 phones + 1 iPad per day = 2×12 + 32 = 56 Wh/day → Jackery would cover that for ~18 days (1000 / 56 ≈ 17.8 days).
Effect on fridge & lights runtime (what really matters)
Small electronics don’t use much energy compared with a fridge. To show the effect, here are illustrative examples.
- If the phones/tablet would otherwise draw ~56 Wh/day (example above), then moving that load to the Jackery saves the leisure bank 56 Wh per day.
- Your leisure bank usable capacity ≈ 900 Wh. If the fridge+lights draw, say, 900 Wh per day (typical small compressor fridge average — actual depends on model, ambient temp, duty cycle), then:
- Without Jackery: leisure bank gives you ~1 day (900 Wh / 900 Wh/day).
- With Jackery taking phones/tablet load: leisure bank provides 900 Wh for fridge/lights but you’ve removed 56 Wh/day from it, so the leisure bank lasts ~1.06 days — about ~1.5 hours extra of fridge runtime.
- If your fridge is more efficient (for example 450 Wh/day average), the same saved 56 Wh/day gives an extra ~0.12 day ≈ 3 hours.











