Can AA lithium batteries be trusted on a boat?

[jonathanA]

7 hours ago, David Schweizer said:

 

Not wishing you to suck eggs, I assume you are buying good quality batteies. These days I only use Procell (non rechargeable) batteries which are the commercial range made by Duracall, and seem to last longer than all the competitors. They have to be bought in bulk (minimum quantity-10), and usually only on line, but they are cheaper than normal domestic batteries. For items which use a lot of battery power, like fairy lights etc, I use Duracell 2500 mAh rechargeables, which I charge using a Uniross Ultimate multi charger. I have noticed no significant difference in the light output between non-rechargeable or rechargeable batteries, and lifespan appears to be fairly similar. Of course it is a good idea to have more rechargeables available  than you use at any time enabling you to immediate replenish flat ones, as they do take several hours to re-charge.

i buy pro-elec AA/AAA in boxes of 100 for peanuts.(well about 20 quid for 100 AA)  A box of 100 being less than twice the price of a box of 40. Having compared the mAh ratings these are better or equivalent to most other alkalines that i could find datasheets for.  A box of 100 will keep all the grandkids (and SWMBOs) toys going for a year or two. (i.e many battery changes not a single battery set for years) Agree for 'proper' stuff NiMh rechargables are the way to go - I find GP ReCyKo's come ready charged and are cost competitive 

 

I have found that the really cheap amazon/pound shop/chinese auction site AAA's are often fractionally physically smaller than proper AAA cells and don't always work in things like remote controls or stuff with poor battery compartments. (as well as lasting about 5 seconds) 

[Alan de Enfield]

1 hour ago, MtB said:

 

Quite so, but why muddy the waters with LFP house batteries when we are discussing cheapo NMC cells in cheapo toys and AA 1.5V rechargeable cells (see thread title) and their tendency to combust under charge?

 

Except that the insurers are saying ".... If Your Craft , tender or toys are fitted with Lithium- ion batteries ...."

 

Expecting that that statement does not include "house batteries" may lead to dissapointment.

Edited January 3 by Alan de Enfield

[Momac]

13 hours ago, Alan de Enfield said:

 

And for the 1st time my insurers have included a clause :

 

If Your Craft , tender or toys are fitted with Lithium- ion batteries they must be charged within daylight
hours , must not be left unattended whilst being charged and they must be used in accordance with the
manufacturers’ recommendations/instructions.

 

 

I will look out for that one at next renewal but suspect it will be with most insurances and unavoidable. Pleased in a way I have stuck with lead acid for the boat batteries and lithium only in portable batteries which can all be charged within daylight while someone is present. I don't understand  why they have said daylight hours. I think they really mean don't leave things with lithium batteries  on charge overnight but that's not what it says .

 

Having said that I don't think anyone has to rush out and buy a special lithium fire extinguisher. You are covered for fire as long as the rules about charging are obeyed.

 

 

 

Edited January 3 by Momac

[Gybe Ho]

12 hours ago, Momac said:

In that case stick with the Tudor theme. They didn't have electricity then.

 

Do you think King Henry VIII would have spurned electric candles and solar panels?

[Jen-in-Wellies]

31 minutes ago, Gybe Ho said:

 

Do you think King Henry VIII would have spurned electric candles and solar panels?

Or the electric chair for surplus wives and courtiers.

[Momac]

40 minutes ago, Gybe Ho said:

 

Do you think King Henry VIII would have spurned electric candles and solar panels?

Under Henry VIII's 1542 witchcraft act the penalty for witchcraft was death (hanging) and forfeiture of goods.

[Gybe Ho]

1 hour ago, Jen-in-Wellies said:

Or the electric chair for surplus wives and courtiers.

 

So that's why Victron support parallel configuration of Multiplus invertors.